大崎 純 (Makoto Ohsaki)

Research Paper

  1. T. Nakajima, M. Ohsaki and M. Miki, Form finding of tension-compression mixed shells based on hyperbolic equilibrium equations, J. Structural Eng., Vol. 90, No. 831, pp. 568-578, 2025. (in Japanese)

  2. N. Takayama, R. Watada, M. Ohsaki, T. Kimura, K. Kanazawa and R. Tsuchida, Evaluation and prediction of mechanicalperformance of plywood seismic wall with non-uniform lattice patterns processed by cutting, J. Structural Eng., AIJ, Accepted, 2025. (in Japanese)

  3. Q. Zeng, M. Ohsaki, K. Hayashi, S. Zhu and X Guo, Local search-based online learning algorithm for shape and cross-section optimization of free-form single-layer reticulated shells, Automation in Construction, Vol. 174, Paper No. 106144, 2025.

  4. K. Takenaka, M. Ohsaki, M. Yamakawa and K. Hayashi, Multi-agent reinforcement learning for optimal design of 3D-steel frames as assembly of 2D-frames, J. Struct. Constr. Eng., AIJ, Vol. 90, No. 829, pp. 334-343, 2025. (in Japanese)

  5. C. Kupwiwat, K. Hayashi and M. Ohsaki, Hierarchical graph-based machine learning model for optimization of three-dimensional braced steel frame, Eng. Appl. Artificial Intelligence, Accepted for publication, 2025.

  6. X. Feng, J. Xu, J. Y. Zhang, M. Ohsaki and Y. Zhao, Y. Luo, Y. Chen and X. Xu, Trajectory planning on rolling locomotion of spherical movable tensegrity robots with multi-gait patterns, Soft Robotics, Vol. 11(5), pp. 725-740, 2024.

  7. S. Li, Y. Zheng, H. Wu, J. Y. Zhang, M. Ohsaki, C. Yang and Y. Luo, Dynamics analysis of deployment process of the Bennett linkage with revolute clearance joints, Nonlinear Dynamics, Vol. 112, pp. 10911-10935, 2024.

  8. J. Takagi, K. Saito, H. tange, M. Ohsaki and T. Mikami, Steel weight and structural seismic properties of sperior design solutions of steel buildings with different sizes and occupancies, J. Struct. Constr. Eng., AIJ, Vol. 89, No. 823, pp. 1051-1059, 2024. (in Japanese)

  9. T. Nakajima and M. Ohsaki, Form generation of piecewise developable surfaces using equilibrium equations of shells, J. Struct. Constr. Eng., AIJ, Vol. 89, No. 822, pp. 897-907, 2024. (in Japanese)

  10. K. Hayakawa, M. Ohsaki and J. Y. Zhang, Meshless non-parametric shape design of piecewise approxmiately developable surfaces using discretized local Gauss map, J. Int. Assoc. Shell Spatial. Struct., Vol. 64, No. 1, pp. 5-14, 2024.

  11. K. Hayakawa, T. Ohba and M. Ohsaki, Analytical and numerical investigation of second-order infinitesimal mechanism in rigid origami, Mechanism and Machine Theory, Vol. 194, Paper No. 105572, 2024.

  12. C. Kupwiwat, K. Hayashi and M. Ohsaki, Multi-objective optimization of truss structure using multi-agent reinforcement learning and graph representation, Eng. Appl. Artificial Intelligence, Vol. 129, Paper No. 107594, 2024.

  13. K. Hayakawa and M. Ohsaki, Panel-pin model for kinematic and equilibrium analysis of rigid origami, J. Int. Assoc. Shell Spatial. Struct., Vol. 64, No. 4, pp. 278--288, 2023.

  14. C. Kupwiwat, K. Hayashi and M. Ohsaki, Deep deterministic policy gradient and graph attention network for geometry optimization of latticed shells, Applied Intelligence, Vol. 53(17), pp. 19809–19826, 2023.

  15. J. Y. Zhang and M. Ohsaki, A design tool for globally developable discrete architectural surfaces using Ricci flow, Japan Architectural Review, Vol.6(1), Paper No. e12410, 2023.

  16. Q. Zeng, M. Ohsaki, J. Y. Zhang, S. Zhu and Z. Li, Structured triangular mesh generation method for free-form gridshells based on conformal mapping and virtual interaction forces, Eng. Sruct., Vol. 295, Paper No. 116879, 2023.

  17. R. Kurihara, J. Takagi, M. Ohsaki and T. Mikami, Cost-minimization of seismically isolated buildings with design variables of member sections and device combinations, J. Struct. Constr. Eng., AIJ, Vol. 88, No. 811, pp. 1339-1347, 2023. (in Japanese)

  18. R. Watada and M. Ohsaki, N-gonal multilayer symmetric revolute linkage deployed from bundle to surface of revolution, J. Mechanical Design, Vol. 145, Paper No. 113301, 2023.

  19. B. Do and M. Ohsaki, Bayesian optimization-assisted approximate Bayesian computation and its application to identifying cyclic constitutive law of structural steels, Computers & Structures, Vol. 286, Paper No. 107111, 2023.

  20. J. Takagi, Y. Yabuki, A. Hayashi and M. Ohsaki, Structural characteristics of superior desig solutions of steel buildings complying with seismic design standards in Japan and US, J. Struct. Constr. Eng., AIJ, Vol. 88, No. 808, pp. 1016-1026, 2023. (in Japanese)
  21. T. Nakajima and M. Ohsaki, Form finding of free-form shells with specified horizontal stress distribution, J. Struct. Constr. Eng., AIJ, Vol. 88, No. 808, pp. 945-953, 2023. (in Japanese)
  22. C. Kupwiwat, Y. Iwagoe, K. hayashi and M. Ohsaki, Deep deterministic policy gradient and graph convolutional networks for topology optimization of braced steel frames, J. Struct. Eng., AIJ, Vol. 69B, pp. 129-139, 2023.

  23. Y. Zheng, Y. kang, J. Y. Zhang, M. Ohsaki, C. Yang, H.-P. Wan, T. Aoki and Y. Luo, Explicit approach for the in-plane cyclic behaviors of unreinforced masonry structures using finite particle method, Structures, Vol. 50, pp. 1493-1514, 2023.

  24. K. Hayashi, Y. Jikumaru, M. Ohsaki, T. Kagaya and Y. Yokosuka, Mean curvature flow for generating discrete surfaces with piecewise constant mean curvatures, Comput. Aided Geom. Des., Vol. 101, Paper No. 102169, 2023.

  25. Z. Huang, H. Liu, J. Y. Zhang, Z. Li, M. Ohsaki and Q. Bai, Experimental and numerical study on the effective length of tower cross bracing, Thin-Walled Structures, Vol. 182, Paper No. 110296, 2023.

  26. S. Zhu, M. Ohsaki, K. Hayashi, S. Zong and X. Guo, Deep reinforcement learning-based critical element identification and demolition planning of frame structures, Frontiers of Structural and Civil Engineering, Vol. 16(11), pp. 1397-1414, 2022.

  27. J. Takagi, A. Hayashi, K. Saito and M. Ohsaki, Relationships between seismic design conditions and sperior design solutions of steel building frames, J. Struct. Constr. Eng., AIJ, Vol. 87, No. 802, pp. 1257-1266, 2022. (in Japanese); English translation: J. Takagi, A. Hayashi, K. Saito and M. Ohsaki, Relationship between seismic design conditions and superior design solutions of steel buildings, Japan Architectural Review, Vol. 6(1), e12367, 2023.

  28. K. Hayashi, M. Ohsaki and M. Kotera, Assembly sequence optimization of spatial trusses using graph embedding and reinforcement learning, J. Int. Assoc. Shell Spatial. Struct., Vol. 63, No. 4, 232-2409, 2022.

  29. M. Ohsaki, B. Do, J. Fujiwara, T. Kimura and T. Yamashita, Two-step parameter identification of multi-axial cyclic constitutive law of structural steels from cyclic structural responses, Structures, Vol. 46. pp. 2014-2030, 2022.

  30. K. Hayakawa, Y. Maruyama, A. Adachi and M. Ohsaki, Approximation of curved surface by rigid origami with cutting lines, J. Architecture and Planning, AIJ, Vol. 87, No. 801, pp. 2288-2297, 2022. (in Japanese)

  31. K. Hayakawa and M. Ohsaki, Equilibrium path and stability analysis of rigid origami using energy minimization of frame model, Frontiers in Built Environment, Specialty Section: Control and Asset Management, Vol. 8, Paper No. 995710, 2022.

  32. C. Kupwiwat, K. Hayashi and M. Ohsaki, Deep deterministic policy gradient and graph convolutional network for bracing direction optimization of grid shells, Frontiers in Built Environment, Specialty Section: Computational Methods in Structural Engineering, Vol. 8, Paper No. 899072, 2022.

  33. T. Horiuchi, M. Ohsaki, M. Kurata, J. A. Ramirez, T. Yamashita and K. Kajiwara, Contributions of E-Defense shaking table to earthquake engineering and its future, J. Disaster Research, Vol. 17(6), pp. 985-999. 2022.

  34. W. Shen, M. Ohsaki and J. Y. Zhang, A 2-dimentional contact analysis using second-order virtual element method, Comp. Mech., Vol. 70, pp. 225-245, 2022.

  35. B. Do and M. Ohsaki, Proximal-exploration multi-objective Bayesian optimization for inverse identification of cyclic constitutive law of structural steels, Struct. Multidisc. Optim, Vol. 65(7), Paper No. 199, 2022.

  36. S. Tsuda, J. Kohno, Y. Nakahara and M. Ohsaki, Composition of curvilinearly extendable tubular scissor mechanisms, Int. J. Solids. Struct., Vol. 250, Paper No. 111673, 2022.

  37. B. Jiang, J. Y. Zhang and M. Ohsaki, Optimization of branching structures for free-form surfaces using force density method, J. Asian Architecture and Building Engineering, Vol. 21(4), pp. 1458-1471, 2022.

  38. M. Ohsaki, J. Fujiwara, T. Miyamura and H. Namba, Implicit finite element analysis of ductile fracture of steel frame under cyclic deformation, Japan Architectural Review, Vol. 5(2), pp. 150-163, 2022.

  39. B. Do and M. Ohsaki, Bayesian optimization for inverse identification of cyclic constitutive law of structural steels from cyclic structural tests, Structures, Vol. 38, pp. 1079-1097, 2022.

  40. R. Takeoka, M. Ohsaki and Y. Sakai, Non-parametric design of free-form shells with curved boundaries and specified reaction forces, Eng. Struct., Vol. 255, Paper No. 113892, 2022.

  41. B. Do and M. Ohsaki, Sequential sampling approach to energy-based multi-objective design optimization of steel frames with correlated random parameters, Earthquake Eng. Struct. Dyn., Vol. 51, pp. 588-611, 2022.

  42. K. Hayashi and M. Ohsaki, Graph-based reinforcement learning for discrete cross-section optimization of planar steel frames, Advanced Engineering Informatics, Vol. 51, Paper No. 101512, 2022.

  43. W. Shen, M. Ohsaki and M. Yamakawa, Quantile-based sequential optimization and reliability assessment for shape and topology optimization of plane frames using L-moments, Structural Safety, Vol. 94, Paper No. 102153, 2022.

  44. J. Takagi, M. Ohsaki and Y. Cao, Structural properties of superior design solutions of steel buildings associated with BRBs, Structures, Vol. 34, pp. 3851-3865, 2021.

  45. D. Watanabe, J. Takagi, M, Ohsaki and T. Mikami, Combinatorial optimization of multiple-type devices in seismically isolated buildings satisfying constraints in response history analysis, J. Struct. Constr. Eng., AIJ, Vol. 86, No. 790, pp. 1615-1621, 2021. (in Japanese)

  46. Y. Sakai and M. Ohsaki, Optimization method for shape design of auxetic bending-active gridshells using discrete differential geometry, Structures, Vol. 34, pp. 1589-1602, 2021.

  47. J, Cui, Y. Zheng, M. Ohsaki and Y. Luo, Shape optimization of piecewise developable free-form grid surface using plate components, Engineering Structures, Vol. 245, Paper No. 112865, 2021.

  48. B. Do, M. Ohsaki and M. Yamakawa, Bayesian optimization for robust design of steel frames with joint and individual probabilistic constraints, Engineering Structures, Vol. 245, Paper No. 112859, 2021.

  49. S. Zhu, M. Ohsaki, K. Hayashi and X. Guo, Machine-specified ground structures for topology optimization of binary trusses using graph embedding policy network, Adv. in Eng. Software, Vol. 159, Paper No. 103032, 2021.

  50. S. Zhu, M. Ohsaki, Q. Zeng and X. Guo, Form-finding of aluminum alloy reticulated structures considering joint rigidity, Engineering Structures, Vol. 242, Paper No. 112618, 2021.

  51. Y. Zheng, J. Y. Zhang, M. Ohsaki, H,-P. Wan, C. Yang, Y. Luo, Optimization of the rod forces in the reticular support structure of JUNO central detector, Structures, Vol. 33, pp. 1645-1658, 2021.

  52. M. Ohsaki and K. Hayakawa, Non-parametric shape design of free-form shells using fairness measures and discrete differential geometry, J. Int. Assoc. Shell Spatial. Struct., Vol. 62, No. 2, 93-101, 2021.

  53. J. Y. Zhang, M. Ohsaki, J. J. Rimoli and K. Kogiso, Optimization for energy absorption of 3-dimensional tensegrity lattice with truncated octahedral units, Composite Structures, Vol. 267, Paper No. 113903, 2021.

  54. Y. Zheng, H.-P. Wan, J. Y. Zhang, C. Yang, Y. Luo and M. Ohsaki, Local-coordinate representation for spatial revolute clearance joints based on a vector-form particle-element method, Int. J. Struct. Stability and Dynamics, Paper No. 2150093, 2021.

  55. T. Miyamura, M. Ohsaki, J. Fujiwara and M. Yamamoto, Coupled structural and heat conduction FE analysis of laminated high damping rubber bearing, Earthquake Eng. Struct. Dyn., Vol. 50, pp. 2462-2487, 2021.

  56. W. Shen, M. Ohsaki and M. Yamakawa, Robust geometry and topology optimization of plane frames using order statistics and force density method with global stability constraint, Int. J. Numer. Meth. Eng., Vol. 122, pp. 3653-3677, 2021.

  57. W. Shen and M. Ohsaki, Geometry and topology optimization of plane frames for compliance minimization using force density method for geometry model, Engineering with Computers, Vol. 37, pp. 2029-2046, 2021.

  58. K. Hayashi and M. Ohsaki, Reinforcement learning for optimum design of a plane frame under static loads, Engineering with Computers, Vol. 37, pp. 1999-2011, 2021.

  59. K. Hayakawa and M. Ohsaki, Shape design of membrane structure using geometric invariants of discrete surface, J. Struct. Constr. Eng., AIJ, Vol. 86, No. 783, pp. 772-782, 2021.

  60. J. Takagi, Y. Cao, Y. Yabuki and M. Ohsaki, Superior design solutions of steel buildings including strength and location of buckling restrained braces in design variables, J. Struct. Constr. Eng., AIJ, Vol. 86, No. 782, pp. 642-650, 2021. (in Japanese)

  61. Y. Sakai and M. Ohsaki, Non-parametric shape design method of free-form shells using membrane stress projected onto horizontal plane, AIJ J. Technol. Des, Vol. 27, No. 66, pp. 1098-1103, 2021. (in Japanese)

  62. B. Do and M. Ohsaki, A random search for discrete robust design optimization of linear-elastic steel frames under interval parametric uncertainty, Comp. & Struct., Vol. 249, Paper No. 106506, 2021.

  63. B. Do, M. Ohsaki and M. Yamakawa, Sequential mixture of Gaussian processes and saddlepoint approximation for reliability-based design optimization of structures, Struct. Multidisc. Optim, Vol. 64, pp. 625-648, 2021.

  64. K. Hayakawa and M. Ohsaki, Form generation of rigid origami for approximation of a curved surface based on mechanical property of partially rigid frames, Int. J. Solids. Struct., Vol. 216, pp. 182-199, 2021.

  65. K. Sakaguchi, M. Ohsaki and T. Kimura, Machine learning for extracting features of approximate optimal brace locations of steel frames, Frontiers in Built Environment, Specialty Section: Computational Methods in Structural Engineering,Vol. 7, Paper No. 616455, 2021.

  66. K. Hayashi, Y. Jikumaru, M. Ohsaki, T. Kagaya and Y. Yokosuka, Discrete Gaussian curvature flow for piecewise constant Gaussian curvature surface, Computer-Aided Design, Vol. 134, Paper No. 102992, 2021.

  67. B. Jiang, J. Y. Zhang and M. Ohsaki, Shape optimization of free-form shell structures combining static and dynamic behaviors, Structures, Vol. 29, pp. 1791-1807, 2021.

  68. W. Shen, M. Ohsaki and M. Yamakawa, Multiobjective robust shape and topology optimization of plane frames using order statistics, Struct. Multidisc. Optim., Vol. 63, pp. 137-160, 2021.

  69. M. Ohsaki, J. Fujiwara and F. Takeda, Approximate cutting pattern optimization of frame-supported and pneumatic membrane structures, Int. J. Mechanics and Materials in Design, Vol. 16, pp. 883-896, 2021.

  70. S. Zhu, M. Ohsaki and X. Guo, Prediction of non-linear buckling load of imperfect reticulated shell using modified consistent imperfection and machine learning, Engineering Structures, Vol. 226, Paper No. 111374, 2021.

  71. Y. Sakai and M. Ohsaki, Parametric study of non-periodic and hybrid auxetic bending-active gridshell, J. Int. Assoc. Shell Spatial. Struct., Vol. 61, No. 4, pp. 275-284, 2020.

  72. B. Do and M. Ohsaki, Gaussian mixture model for robust design optimization of planar steel frames Struct. Multidisc. Optim., Vol. 63, pp. 75-4, 2020.

  73. Y. Su, J. Y. Zhang, M. Ohsaki and Y. Wu, Topology optimization and shape design method for large-span tensegrity structures with reciprocal struts, Int. J. Solids. Struct., Vol. 206, pp. 9-22, 2020.

  74. T. Kimura, M. Ohsaki, S. Fujita, T. Michiels and S. Adriaenssens, Shape optimization of no-tension arches subjected to in-plane loading, Structures, Vo. 28, pp. 158-169, 2020.

  75. S. Zhu, M. Ohsaki, X. Guo and Q. Zeng, Shape optimization for non-linear buckling load of aluminum alloy reticulated shells with gusset joints, Thin-Walled Structures, Vol. 154, Paper No. 106830, 2020.

  76. K. Hayashi and M. Ohsaki, Reinforcement learning and graph embedding for binary truss topology optimization under stress and displacement constraints, Frontiers in Built Environment, Specialty Section: Computational Methods in Structural Engineering, Vol. 6, Paper No. 59, 2020.

  77. Y. Sakai, M. Ohsaki and S. Adriaenssens, A 3-dimensional elastic beam model for form-finding of bending-active gridshells, Int. J. Solids Struct., Vol. 193-194, pp. 328-337, 2020.

  78. J. Fujiwara, M. Ohsaki, H. Tagawa, T. Miyamura and T. Yamashita, Verification and validation of cyclic shear-bending analysis of CFT-colunm using E-Simulator, AIJ J. Trchnol. Des., Vol. 26, No. 63, pp. 490-495, 2020. (in Japanese)

  79. T. Kimura and M. Ohsaki, Structural optimization of supporting structure of gymnasium with steel roof for seismic response reduction of bearing reaction foeces, J. Struct. Constr. Eng., AIJ, Vol. 85, No. 767, pp. 61-71, 2020. (in Japanese)

  80. Y. Sawamoto and M. Ohsaki, Evaluation on plastic deformation capacity of steel beam ends with local buckling and fracture under cyclic loading using FE analysis, J. Struct. Constr. Eng., AIJ, Vol. 85, No. 767, pp. 105-115, 2020. (in Japanese)

  81. Y. Su, M. Ohsaki, Y. Wu, J. Y. Zhang, A numerical method for form finding and shape optimization of reciprocal structures, Eng. Struct., Vol.198, 109510, 2019.

  82. Y. Zu, W. Fan, J. Y. Zhang, Z. Li, M. Ohsaki, Investigation of equivalent correlation coefficient based on the Mehler's formula, Engineering Computations, Vol. 36(4), pp.1169-1200, 2019.

  83. J. Takagi, R. Obana and M. Ohsaki, Superior design solutions of section sizes in steel buildings for different lateral frame systems and column shapes, J. Struct. Constr. Eng., AIJ, Vol. 84, No. 763, pp. 1293-1303, 2019. (in Japanese); English translation: J. Takagi, R. Obana and M. Ohsaki, Superior design solutions of section sizes in steel buildings for different lateral frame systems and column shapes, Japan Architectural Review, Vol. 3(4), pp. 445-458, 2020.

  84. M. Kumar Pal, T. Yamashita, T. Miyamura and M. Ohsaki, A comprehensive numerical simulation of steel-concrete composite beam incorporating compressive failure of concrete, Int. J. Computational Methods, Vol. 16, No. 6, Paper No. 1840028, 2019

  85. K. Hayashi and M. Ohsaki, FDMopt: Force density method for optimal geometry and topology of trusses, Adv. in Eng. Software, Vol. 133, pp. 12-19, 2019.

  86. K. Hayakawa and M. Ohsaki, Form generation of rigid-foldable origami structure using frame model，J. Environmental Eng., AIJ, Vol. 84, No. 760, pp. 597-605, 2019. (in Japanese)

  87. M. Ohsaki, M. Yamakawa, W. Fan and Z. Li, An order statistics approach to multiobjective structural optimization considering robustness and confidence of responses, Mechanics Research Communications, Vol. 97, pp. 33-38, 2019.

  88. Y. Sawamoto and M. Ohsaki, Evaluation on plastic deformation capacity of welded beam ends under cyclic loading using FE analysis, J. Struct. Constr. Eng., AIJ, Vol. 84, No. 759, pp. 695-704, 2019. (in Japanese)

  89. Q. Ma, M. Ohsaki, Z. Chen and X. Yan, Multi-objective optimization for prestress design of cable-strut structures, Int. J. Solids Struct, Vol. 165, pp. 137-147, 2019.

  90. T. Kimura, M. Ohsaki and Y. Yamaoka, Shape and topology optimization of latticed shear wall utilising contact to existing frame, J. Struct. Constr. Eng., AIJ, Vol. 84, No. 757, pp. 358-391, 2019. (in Japanese)

  91. J. Y. Zhang, M. Ohsaki and E. Tsuura, Self-equilibrium and super-stability of truncated regular hexahedral and octahedral tensegrity structures, Int. J. Solids Struct., Vol. 161, pp. 182-192, 2019.

  92. R. Watada, M. Ohsaki and Y. Kanno, Group theoretic approach to large deformation of bar-hinge mechanisms, Japan J. Industrial and Appl. Math., Vol. 36(1), pp. 177-208, 2019.

  93. J. Cui and M. Ohsaki, Approximate design system of free-form surface combining developable surfaces, AIJ J. Trchnol. Des., Vol. 25, No. 59, pp. 123-128, 2019. (in Japanese)

  94. R. Watada and M. Ohsaki, Developable structure using regular 2N-gonal frames with revolute joints, AIJ J. Trchnol. Des., Vol. 25, No. 59, pp. 129-134, 2019. (in Japanese)

  95. J. Fujiwara, M. Ohsaki, H. Tagawa, T. Miyamura and T. Yamashita, Finite element analysis of square concrete-filled-tube column under cyclic shear-bending considering compressive damage of concrete, J. Struct. Constr. Eng., AIJ, Vol. 84, No. 755, pp. 29-37, 2019. (in Japanese)

  96. T. Miyamura, M.Ohsaki and K. Kajiwara, Seismic response analysis of super-highrise steel building frame modeled using solid elements: Analysis under simulated ground motions of Great Nankai Trough Earthquake that continue morethan two minutes, J. Struct. Constr. Eng., AIJ, Vol. 84, No. 755, pp. 39-49, 2019. (in Japanese)

  97. Q. Ma, M. Ohsaki, Z. Chen and X. Yan, Step-by-step unbalanced force iteration method for cable-strut structure, Eng. Struct., Vol. 177, pp. 331-344, 2018.

  98. T. Tamura, M. Ohsaki and J. Takagi, Machine learning for combinatorial optimization of brace placement of steel frames, Japan Architectural Review, Vol. 1(4), pp. 419-430, 2018.

  99. J. Cui and M. Ohsaki, Shape design of curved surface of membrane structure using developable surface, J. Int. Assoc. Shell. Spatial Struct., Vol. 59(3), pp. 199-214, 2018.

  100. M. Ohsaki, Y. Kanno and Y. Yamaoka, Second-order cone programming approach to design of linkage mechanisms with arbitrarily inclined hinges, J. Mech. Des., Vol. 140(10), 102301-102301-9, Paper No. MD-17-1667, 2018.

  101. T. Kimura, M. Ohsaki and R. Okazaki, Simultaneous optimization of brace locations and cross-sections of beams and columns of steel frames, J. Struct. Constr. Eng., AIJ, Vol. 83, No. 752, pp. 1445-1454, 2018. (in Japanese)

  102. H. Liu, J. Y. Zhang and M. Ohsaki, 3-bar tensegrity units with non-equilateral triangle on an end plane, Mechanics Research Communications, Vol. 92, pp. 124-130, 2018,

  103. Y. Sakai and M. Ohsaki, Discrete elastica for shape design of gridshells, Eng. Struct., Vol. 169, pp. 55-67, 2018.

  104. R. Watada and M. Ohsaki, Series expansion method for determination of order of 3-dimensional bar-joint mechanism with arbitrary inclined hinges, Int. J. Solids Struct., Vol. 141-142, pp. 78-85, 2018.

  105. T. Mikami, M. Ohsaki and H. Tagawa, Topology optimization of lattice member of earthquake resistant latticed wall for seismic retrofit, J. Struct. Eng., AIJ, 64B, pp. 55-61, 2018. (in Japanese)

  106. S. Tsuda, Y. Nakahara and M. Ohsaki, Design of deployable structure developed from Yoshimura-pattern rigid-origami, AIJ J. Trchnol. Des., Vol. 24, No. 56, pp. 111-116, 2018. (in Japanese)

  107. M. Ohsaki and M. Yamakawa, Stopping rule of multi-start local search for structural optimization, Struct. Multidisc. Optim., Vol. 57, pp. 595-603, 2018.

  108. H. Liu, J. Y. Zhang and Makoto Ohsaki, New 3-bar prismatic tensegrity units, Composite Structures, Vol. 184, pp. 306-313, 2018.

  109. Q. Zhou, W. Fan, Z. Li and M. Ohsaki, Time-variant system reliability assessment by probability density evolution method, J. Eng. Mech., ASCE, Vol. 143(11), Paper No. 04017131, 2017.

  110. M. Ohsaki and K. Hayashi, Force density method for simultaneous optimization of geometry and topology of trusses, Struct. Multidisc. Optim., Vol. 56(5), pp. 1157-1168, 2017.

  111. S. Fujita, Y. Kanno and M. Ohsaki, Computational morphogenesis of minimal surface represented as parametric surface, J. Struct. Constr. Eng., AIJ, Vol. 82, No. 738, pp. 1299-1307, 2017. (in Japanese)

  112. J. Cui, M. Ohsaki and K. Nakamura, Shape optimization of free-form shells consisting of developable surfaces, J. Struct. Constr. Eng., AIJ, Vol. 82, No. 737, pp. 1137-1143, 2017. (in Japanese)

  113. S. Fujita, M. Ohsaki and K. Seki, Shape optimization of latticed shells consisting of ruled surface, J. Struct. Constr. Eng., AIJ, Vol. 81, No. 730, pp. 2091-2099, 2016. (in Japanese)

  114. M. Ohsaki, S. Tsuda and T. Hasegawa, Parameter optimization of tetrahedral tuned mass damper for three-directional seismic response reduction, Eng. Struct., Vol. 126, pp. 667-674, 2016.

  115. M. Ohsaki, T. Miyamura and J. Y. Zhang, A piecewise linear isotropic-kinematic hardening model with semi-implicit rules for cyclic loading and its parameter identification, Computer Modeling in Engineering and Sciences, Vol. 111(4), pp. 303-333, 2016.

  116. J. Cui, G. Zhou and M. Ohsaki, Shape optimization of tree-type support structure of free-form shell using fractal geometry, J. Struct. Constr. Eng., AIJ, Vol. 81, No. 728, pp. 1761-1769, 2016. (in Japanese)

  117. K. Fukushima, M. Ohsaki, T. Mikami and Y. Miyazu, Combinatorial optimization of latticed blocks composed of various unit shapes for seismic retrofit, J. Struct. Constr. Eng., AIJ, Vol. 81, No. 728, pp. 1657-1664, 2016. (in Japanese)

  118. J. Takagi, M. Ohsaki and S. Ishikawa, Ultimate lateral strength and seismic response of steel office buildings composed of space and perimeter frame systems, J. Struct. Constr. Eng., AIJ, Vol. 81, No. 728, pp. 1743-1751, 2016. (in Japanese)

  119. Y. Miyazu, M. Ohsaki and S. Tsuda, Topology optimization of supporting structure for seismic response reduction of an arch, Science China Technological Sciences, Vol. 59(6), pp. 852-861, 2016.

  120. M. Yamakawa and M. Ohsaki, Robust design optimization considering parameter variation of seismic characteristics using ordet statistics, J. Struct. Eng., AIJ, 62B, pp. 381-386, 2016. (in Japanese)

  121. M. Ohsaki and S. Tsuda and Y. Miyazu, Design of linkage mechanisms of partially rigid frames using limit analysis with quadratic yield functions, Int. J. Solids and Struct., Vol. 88-89, pp. 68-78, 2016.

  122. J. Y. Zhang and M. Ohsaki, Form-finding of complex tensegrity structures by dynamic relaxation method, J. Struct. Constr. Eng., AIJ, Vol. 81, No. 719, pp. 71-77, 2016.

  123. J. Y. Zhang and M. Ohsaki, Free-form design of tensegrity structures by combination of non-linear analysis and optimization techniques, J. Spatial Strutures, China Academic Journal Electronic Publishing House, Vol. 21(3), pp. 92-96, 2015; also published in Proc. 11th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2015), 2015.

  124. J. Takagi and M. Ohsaki, Comparison of structural characteristics of steel office buildings composed of space and perimeter frame systems, J. Struct. Constr. Eng., AIJ, Vol. 80, No. 715, pp. 1469-1478, 2015. (in Japanese)

  125. T. Mikami, M. Ohsaki and K. Fukushima, Shape optimization of latticed blocks for seismic retrofit of building frames, J. Struct. Constr. Eng., AIJ, Vol. 80, No. 715, pp. 1427-1434, 2015. (in Japanese)

  126. M. Ohsaki, T. Miyamura, M. Kohiyama, T. Yamashita, M. Yamamoto and N. Nakamura, Finite-element analysis of laminated rubber bearing of building frame under seismic excitation, Earthquake Eng. Struct Dyn., Vol. 44, pp. 1881-1898, 2015.

  127. M. Ohsaki and J. Y. Zhang, Nonlinear programming approach to form-finding and folding analysis of tensegrity structures using fictitious material properties, Int. J. Solids and Struct., Vol. 69-70, pp. 1-10, 2015.

  128. T. Miyamura, T. Yamashita, H. Akiba and M. Ohsaki, Dynamic FE simulation of four-story steel frame modeled by solid elements and its validation using results of full-scale shake-table test, Earthquake Eng. Struct Dyn., Vol. 44, pp. 1449-1469, 2015.

  129. Y. Miyazu, M. Ohsaki, J. Nozoe, Shape optimization of openings of steel panel dampers, J. Struct. Eng., AIJ, 61B, pp. 489-494, 2015. (in Japanese)

  130. M. Yamakawa, M. Nihei, M. Tatibana, K. Hukazawa, M. Ohsaki, T. Nakamura and H. Yamanouchi, Modeling and simulation of spring steel damper based on parameter identification with a heuristic optimization approach, J. Mechanical Science and Technology, KSME, Vol. 29, No. 4, pp. 1465-1472, 2015.

  131. H. Tagawa, T. Miyamura, T. Yamashita, M. Kohiyama and M. Ohsaki, Detailed finite element analysis of full-scale four-story steel frame structure subjected to consecutive ground motions, Int. J. High-Rise Buildings, Vol. 4(1), pp. 65-73, 2015.

  132. M. Ohsaki, Y. Kanno and S. Tsuda, Linear programming approach to design of spatial link mechanism with partially rigid joints, Struct. Multidisc. Optim., Vol. 50, pp. 945-956, 2014.

  133. T. Yamashita, M. Ohsaki, M. Kohiyama, T. Miyamura, J. Y. Zhang and H. Tagawa, Detailed finite element analysis of composite beam under cyclic loads, J. Struct. Constr. Eng., AIJ, Vol. 79, No. 704, pp. 1481-1490, 2014. (in Japanese)

  134. M. Ohsaki, O. Iwatsuki and H. Watanabe, Seismic response of building frames with flexible base optimized for reverse rocking response, Eng. Struct. Vol. 74(1), pp. 170-179, 2014.

  135. M. Kohiyama, M. Ohsaki, T. Miyamura and T. Yamashita, Finite element analysis of contact corner of ALC panel using E-Simulator, J. Struct. Eng., AIJ, 60B, pp. 463-470, 2014. (in Japanese)

  136. R. Kota, M. Yamakawa, N. Katoh, Y. Araki and M. Ohsaki A design method for optimal truss structures with redundancy based on combinatorial rigidity theory, J. Struct. Constr. Eng., AIJ, Vol. 79, No. 699, pp. 583-592, 2014. (in Japanese)

  137. M. Ohsaki, S. Tsuda and H. Watanabe, Optimization of retractable structures utilizing bistable compliant mechanism, Eng. Struct., Vol. 56, pp. 910-918, 2013.

  138. J. Nozoe, M. Ohsaki and H. Watanabe, Optimization of a shear-type panel damper using finite element analysis and heuristic approach, J. Struct. Constr. Eng., AIJ, Vol. 78, No. 689, pp. 1247-1252, 2013. (in Japanese)

  139. M. Ohsaki, M. Katsura, H. Watanabe and T. Hikino, Identification of analysis parameters using results of full-scale test and evaluation of variation of responses of steel frame, J. Struct. Eng., Vol. 59B, pp. 201-209, 2013. (in Japanese)

  140. S. Tsuda, M. Ohsaki, S. Kikugawa and Y. Kanno, Analysis of stability and mechanism of frames with partially rigid connections, J. Struct. Constr. Eng., AIJ, Vol. 78, No. 686, pp. 791-798, 2013. (in Japanese)

  141. M. Ohsaki and J. Y. Zhang, Prediction of inelastic seismic responses of arch-type long-span structures using a series of multimodal pushover analyses, J. Int. Assoc. Shell and Spatial Struct., Vol. 54(1), pp. 27-37, 2013.

  142. S. Fujita and M. Ohsaki, Shape optimization of latticed shell defined by parametric surface for uniform member length and maximum stiffness, J. Struct. Constr. Eng., AIJ, Vol. 78, No. 685, pp. 495-502, 2013. (in Japanese)

  143. M. Yamakawa, M. Ohsaki and E. Mitsuda, Optimum design methods for steel frames considering transient dynamic elasto-plastic responses using partly available sensitivity information, J. Struct. Constr. Eng., AIJ, Vol. 78, No. 683, pp. 91-99, 2013. (in Japanese)

  144. J. Y. Zhang and M. Ohsaki, Self-equilibrium and stability of regular truncated tetrahedral tensegrity structures, J. Mech. Phys. Solids, Vol. 60, pp. 1757-1770, 2012.

  145. M. Ohsaki and M. Katsura, A random sampling approach to worst-case design of structures, Struct. Multidisc. Optim., Vol. 46, pp. 27-39, 2012.

  146. M. Ohsaki and T. Nakajima, Optimization of link member of eccentrically braced frames for maximum energy dissipation, J. Constr. Steel Res., Vol. 75, pp. 38-44, 2012.

  147. S. Tsuda and M. Ohsaki, parameter optimization of mass damper consisting of compliant mechanism for bi-directional control of spatial structures, J. Struct. Constr. Eng., AIJ, Vol. 77, No. 673, pp. 379-387, 2012. (in Japanese)

  148. M. Ohsaki, J. Y. Zhang and I. Elishakoff, Multiobjective hybrid optimization-antioptimization for force design of tensegrity structures, J. Appl. Mech., Vol. 79, No. 2, pp. 021015-1-8, 2012.

  149. T. Miyamura, M. Ohsaki, M. Kohiyama, D. Isobe, K. Onda, H. Akiba, M. Hori, K. Kajiwara and T. Ine, Large-scale FE analysis of steel building frames using E-Simulator, Progress in Nuclear Science and Technology, Vol. 2, pp. 651-656, 2011.

  150. J. Y. Zhang and M. Ohsaki, Force identification of prestressed pin-jointed structures, Comp. & Struct., Vol. 89, pp. 2361-2368, 2011.

  151. M. Ohsaki, T. Nakajima, J. Fujiwara and F. Takeda, Configuration optimization of clamping members of frame-supported membrane structures, Eng. Struct., Vol. 33, pp. 3620-3627, 2011.

  152. R. Watada, M. Ohsaki and Y. Kanno, Non-uniqueness and Symmetry of Optimal Topology of a Shell for Minimum Compliance, Struct. Multidisc. Optim., Vol. 43, pp. 459-471, 2011.

  153. Y. Kanno and M. Ohsaki, A Non-Interior Implicit Smoothing Approach to Complementarity Problems for Frictionless Contacts, Comp. Meth. Appl. Mech. Engng., Vol. 200, pp. 1176-1185, 2011.

  154. T. Hikino, T. Okazaki, N. Suzuki, M. Ohsaki and M. Nakashima, Non-stationary dynamic behavior of various braced frames, J. Steel Structures, pp. 361-368, 2010. (in Japanese)

  155. S. Fujita and M. Ohsaki, Shape optimization of free-form shells using invariants of parametric surface, Int. J. Space Struct., Vol. 25, pp. 143-157, 2010.

  156. T. Hikino, M. Ohsaki, K. Kasai and M. Nakashima, Summary of blined analysis contest for full-scale four-story steel building and evaluation of accuracy of numerical analysis, J. Struct. Constr. Eng., AIJ, Vol. 75, No. 655, pp. 1717-1726, 2010. (in Japanese)

  157. Y. Shimada, K. Suita, S. Yamada, Y. Matsuoka, M. Tada, M. Ohsaki and K. Kasai, Collapse behavior on shaking table test: Dynamic collapse test of full-scale 4-story steel building Part-3, J. Struct. Constr. Eng., AIJ, Vol. 75, No. 653, 1351-1360, 2010. (in Japanese)

  158. T. Miyamura, Y. Kanno and M. Ohsaki, Combined interior-point method and semismooth Newton method for frictionless contact problem, Int. J. Num. Meth. Eng., Vol. 81, pp. 701-727, 2010.

  159. S. Miyai, T. Mizukawa, S. Furusaka, T. Kaneta, T. Ishida, M. Ohsaki and K. Harada, Discussion on classification of diverse professions and their generation process, J. Archit. Plann., AIJ, Vol. 75, No. 650, pp. 1557-1562, 2010. (in Japanese)

  160. J. Y. Zhang, S. D. Guest, R. Connelly and M. Ohsaki, Dihedral `star' tensegrity structures, Int. J. Solids and Struct., Vol. 47(1), pp. 1-9, 2010.

  161. T. Kinoshita and M. Ohsaki, Shape optimization of compliant mechanisms for seismic isolator model, J. Struct. Constr. Eng., AIJ, Vol. 75, No. 647, pp. 113-119, 2010. (in Japanese)

  162. S. Morooka, S. Tsuda and M. Ohsaki, Seismic performance evaluation of school gymnasium using static analysis, J. Korean Assoc. Spatial Struct., Vol. 9(4), pp. 49-59, 2009.

  163. T. Yamashita, T. Kumagai, T. Miyamuta, T. Ogawa and M. Ohsaki, Application of the multigrid method to finite element analysis of fluid flow around domes in strong wind, J. Int. Assoc. for Shell and Spatial Struct., Vol. 50(3), pp. 181-191, 2009.

  164. T. Kinoshita and M. Ohsaki, Synthesis of bistable compliant structures from truss mechanism, J. Computational Science and Technology, JSME, Vol. 3(2), pp. 417-425, 2009.

  165. T. Kinoshita, M. Ohsaki and T. Nakajima, Topology optimization of compliant mechanisms for vertical seismic isolation of spatial structures, J. Int. Assoc. for Shell and Spatial Struct., Vol. 50(2), pp. 89-96, 2009.

  166. K. Ikeda, M. Ohsaki, K. Sudo and T. Kitada, Probabilistic analysis of buckling loads of structures via extended Koiter law, Struct. Eng. Mech., Vol. 32(1), pp. 167-178, 2009.

  167. R. Watada and M. Ohsaki, Topology optimization of trusses consisting of traditional layouts, J. Struct. Constr. Eng., AIJ, Vol. 74, No. 639, pp. 857-863, 2009. (in Japanese)

  168. S. Fujita and M. Ohsaki, Shape optimization of shells considering strain energy and algebraic invariants of parametric surface, J. Struct. Constr. Eng., AIJ, Vol. 74, No. 639, pp. 841-847, 2009. (in Japanese)

  169. A. Uchida, M. Ohsaki and J. Y. Zhang, Prediction of inelastic seismic responses of spatial structures by static analysis with higher modes, J. Struct. Eng., AIJ, Vol. 55B, pp. 49-56, 2009. (in Japanese)

  170. M. Ohsaki, H. Tagawa and P. Pan, Shape optimization of reduced beam section under cyclic loads, J. Constructional Steel Research, Vol. 65, pp.1511-1519, 2009.

  171. M. Ohsaki, T. Miyamura, M. Kohiyama, M. Hori, H. Noguchi, H. Akiba, K. Kajiwara and T. Ine, High-precision finite element analysis of elastoplastic dynamic responses of super-highrise steel frames, Earthquake Eng. Struct Dyn., Vol. 38, pp. 635-654, 2009.

  172. J. Y. Zhang, S. D. Guest and M. Ohsaki, Symmetric prismatic tensegrity structures: Part I. Configuration and stability, Int. J. Solids and Struct., Vol. 46(1), pp. 1-14, 2009.

  173. J. Y. Zhang, S. D. Guest and M. Ohsaki, Symmetric prismatic tensegrity structures: Part II. Symmetry-adapted formulations, Int. J. Solids and Struct., Vol. 46(1), pp. 15-30, 2009.

  174. M. Ohsaki and K. Ikeda, Imperfection sensitivity of degenerate hilltop branching points, Int. J. Non-Linear Mech., Vol. 44, pp. 324-336, 2009.

  175. T. Yamashita, T. Kumagai, T. Ogawa, T. Miyamura and M. Ohsaki, Shape optimization of shell roofs subjected to strong wind using multigrid method and variable complexity model, J. Struct. Constr. Eng., AIJ, Vol. 74(636), pp. 636-304, 2009. (in Japanese)

  176. M. Yokose, T. Kaneta, S. Furusaka, K. Harada, M. Ohsaki, K Okada, J. Shin, S. Arai, H. Kashii, K. Nakazono and N. Katoh, K. Tagaya, Y. Ohtake, Decision support system on risk management strategy for the developer of a condominium, in New Frontieres for Safety and Security in Architecture and Urbanism, AIJ, pp. 93-98 , 2009.

  177. T. Miyamura, Y. Kanno and M. Ohsaki, A practical variant of the semismooth Newton method for frictionless contact problems, trusses considering geometrical nonlinearity, J. Computational Science and Technology, JSME, Vol. 3, No. 1, pp. 54-65, 2009.

  178. M. Ohsaki, N. Katoh, T. Kinoshita, S. Tanigawa, D. Avis and I. Streinu, Enumeration of optimal pin-jointed bistable compliant mechanisms with non-crossing members, Struct. Multidisc. Optim., Vol. 37, pp. 645-651, 2009.

  179. Y. Kanno and M. Ohsaki, Optimization-based stability analysis of structures under unilateral constraints, Int. J. Numer. Meth. Eng., Vol. 77, pp. 90-125, 2009.

  180. T. Hagishita and M. Ohsaki, Topology optimization of trusses by growing ground structure approach, Struct. Multidisc., Vol. 37, No. 4, pp. 377-393, 2009.

  181. M. Ohsaki, Local search for multiobjective optimization of steel frames, J. Struct. Constr. Eng., AIJ, Vol. 73(634), pp. 2135-2141, 2008. (in Japanese)

  182. T. Hagishita and M. Ohsaki, Topology mining for optimization of framed structures, J. Advanced Mechanical Design, Systems, and Manufacturing, JSME, Vol. 2, No. 3, pp. 417-428, 2008.

  183. T. Hagishita and M. Ohsaki, Optimal placement of braces for steel frames with semi-rigid joints by scatter search, Comp. \& Struct, Vol. 86, pp. 1983-1993, 2008.

  184. T. Hagishita and M. Ohsaki, Topology optimization of discrete structures by integration of heuristics and nonlinear programming J. Struct. Constr. Eng., AIJ, Vol. 73(633), pp. 1959-1965, 2008. (in Japanese)

  185. D. Avis, N. Katoh, M. Ohsaki, I. Streinu and S. Tanigawa, Enumerating constrained non-crossing minimally rigid frameworks, Discrete Comput. Geom., Vol. 40, pp. 31-46, 2008.

  186. M. Ohsaki, J. Y. Zhang and Y. Ohishi, Force design of tensegrity structures by enumeration of vertices of feasible region, Int. J. Space Struct., Vol. 23(2), pp. 117-126, 2008.

  187. M. Ohsaki and T. Ogawa, Code-based design optimization of single-layer latticed dome, J. Int. Assoc. Shell and Spatial Struct., Vol. 49(1), pp. 49-55, 2008.

  188. M. Ohsaki and Y. Kanno, Stability analysis of cable-bar structures by inverse-power method for eigenvalue analysis with penalization, Int. J. Solids and Struct, Vol. 45, pp. 4264-4273, 2008.

  189. M. Ohsaki, J. Y. Zhang, and J. Y. Kim, Multiobjective optimization for force design of tensegrity structures, J. Korean Assoc. Spatial Struct., Vol. 8(1), pp. 49-56, 2008.

  190. Y. Xu, W. Dai, N. Katoh and M. Ohsaki, Triangulating a convex polygon with fewer number of non-standard bars, Theoretical Computer Science, Vol. 389, pp. 143-151, 2007.

  191. M. Ohsaki, T. Kinoshita and P. Pan, Multiobjective heuristic approaches to design of frames with standard sections, Earthquake Engng. Struct. Dyn., Vol. 36(11), pp. 1481-1495, 2007.

  192. T. Miyamura, T. Kumagai, T. Ogawa, S. Ogata and M. Ohsaki, Application of multigrid method to three-dimensional incompressible viscous flow analysis around shell roofs, J. Struct. Constr. Eng., AIJ, No. 618, 2007. (in Japanese)

  193. P. Pan, M. Ohsaki and H. Tagawa, Shape optimization of H-beam flange for maximum plastic energy dissipation, J. Struct. Eng., ASCE, Vol. 133(8), pp. 1176-1179, 2007.

  194. K. Ikeda and M. Ohsaki, Generalized sensitivity and probabilistic analysis of buckling loads of structures, Int. J. Non-Linear Mechanics, Vol. 42, pp. 733-743, 2007.

  195. D. Avis, N. Katoh, M. Ohsaki, I. Streinu and S. Tanigawa, Enumerating non-crossing minimally rigid frameworks, Graphs and Combinatorics, 23(Suppl), pp. 117-134, 2007.

  196. J. Fujiwara, S. Segawa, K. Oda, F. Fujii, M. Ohsaki and H. Noguchi, Loading tests on a flexible net and its computational model, J. Struct. Constr. Eng., AIJ, No. 616, pp. 67-72, 2007. (in Japanese)

  197. M. Ohsaki and S. Nishiwaki, Generation of link mechanism by shape-topology optimization of trusses considering geometrical nonlinearity, Trans. JSME, A, Vol. 73, No. 729, pp. 659-665, 2007. (in Japanese); English version: M. Ohsaki and S. Nishiwaki, Generation of link mechanism by shape-topology optimization of trusses considering geometrical nonlinearity, J. Computational Science and Technology, Vol. 3, No. 1, pp. 46-53, 2009.

  198. J. Y. Zhang and M. Ohsaki, Stability conditions for tensegrity structures, Int. J. Solids and Struct., Vol. 44, No. 11-12, pp. 3875-3886, 2007.

  199. P. Pan, M. Ohsaki and T. Kinoshita, Constraint approach to performance-based design of steel moment-resisting frames, Eng. Struct., Vol. 29, pp. 186-194, 2007.

  200. M. Ohsaki and K. Ikeda, Worst imperfection of an arch-type truss with multiple member buckling at limit point, J. Struct. Constr. Eng., AIJ, No. 611, pp. 71-77, 2007. (in Japanese)

  201. J. Y. Zhang and M. Ohsaki, Form-finding of tensegrity structures subjected to geometrical constraints, Int. J. Space Struct., Vol. 21, No. 4, pp. 183-195, 2006.

  202. M. Ohsaki and J. Y. Zhang, Stability conditions of prestressed pin-jointed structures, Int. J. Non-Linear Mech., Vol. 41, pp. 1109-1117, 2006.

  203. M. Ohsaki, H. Tagawa and P. Pan, Shape optimization of H-beam flange considering elastoplastic responses - Loading tests and finite element analysis, Steel Construction Eng., Vol. 13, No. 52, pp. 65-72, 2006. (in Japanese)

  204. J-Y. Zhang and M. Ohsaki, Adaptive force density method for form-finding problem of tensegrity structures, Int. J. Solids and Struct., Vol. 43, No. 18-19, pp. 5658-5673, 2006.

  205. M. Ohsaki and K. Ikeda, Imperfection sensitivity analysis of hill-top branching with many symmetric bifurcation points, Int. J. Solids and Struct., Vol. 43, No. 16, pp. 4704-4719, 2006.

  206. M. Ohsaki, Local and global searches of approximate optimal designs of regular frames, Int. J. Numer. Meth. Engng., Vol. 67, pp. 132-147, 2006.

  207. P. Pan, H. Tomofuji, T. Wang, M. Nakashima, M. Ohsaki and K. M. Mosalam, Developement of peer-to-peer (P2P) internet online hybrid test system, Earthquake Engng. Struct. Dyn., Vol. 35, pp. 867-890, 2006.

  208. H. Tomofuji, P. Pan, T. Wang, N. Yoshitake, M. Nakashima and M. Ohsaki, Developement of online test system using socket communication and distributed computation, J. Struct. Constr. Eng., AIJ, No. 603, pp. 31-37, 2006. (in Japanese)

  209. S. Arai, S. Furusaka, T. Kaneta, M. Ohsaki, K. Harada, M. Yokose, H. Kashii, K. Nakazono and N. Katoh, Developement of the risk management system for life cycle of a super-highrise residence, J. Archit. Plann., AIJ, No. 602, pp. 151-158, 2006. (in Japanese)

  210. R. Weitzmann, M. Ohsaki and M. Nakashima, Simplifid methods for design of base-isolated structures in the long-period high-damping range, Earthquake Engng. Struct. Dyn., Vol. 35, pp. 497-515, 2006.

  211. J-Y. Zhang, M. Ohsaki and Y. Kanno, A direct approach to design of geometry and forces of tensegrity structures, Int. J. Solids and Struct., Vol. 43, No. 7, pp. 2260-2278, 2006.

  212. Y. Kanno and M. Ohsaki, Contact analysis of cable networks by using second-order cone programming, SIAM J. Sci. Comput., Vol. 27, No. 6, pp. 2032-2052, 2006.

  213. J-Y. Zhang and M. Ohsaki, Form-finding of self-stressed structures by an extended force density method, J. Int. Assoc. for Shell and Spatial Struct., Vol. 46(3), pp. 159-166, 2005.

  214. T. Ogawa, M. Ohsaki, T. Miyamura and T. Kumagai, Shape optimization of shell roofs subjected to strong wind by using a variable complexity model, J. Int. Assoc. for Shell and Spatial Struct., Vol. 46(2), pp. 108-115, 2005.

  215. M. Ohsaki and S. Nishiwaki, Shape design of pin-jointed multistable compliant mechanism using snapthrough behavior, Struct. Multidisc. Optim., Vol. 30, pp. 327-334, 2005.

  216. Y. Kanno and M. Ohsaki, Minimum principle of complementary energy for nonlinear elastic cable networks with geometrical nonlinearity, J. Opt. Theory and Appl., Vol. 126(3), pp. 617-641, 2005.

  217. Y. Orita, S. Furusaka, T. Kaneta, M. Ohsaki, K. Harada, S. Arai, M. Nakanishi, Quantitative analysis of the risk management of a super-highrise residence, J. Archit. Plann., AIJ, No. 594, pp. 117-124, 2005. (in Japanese)

  218. M. Ohsaki, Design sensitivity analysis and optimization for nonlinear buckling of finite-dimensional elastic conservative structures, Comp. Meth. Appl. Mech. Engng., Vol. 194, pp. 3331-3358, 2005.

  219. T. Wang, P. Pan, H. Tomofuji, M. Nakashima and M. Ohsaki, Online hybrid test combined with general-purpose finite element program, J. Struct. Eng., AIJ, Vol. 51B, pp. 261-268, 2005.

  220. M. Ohsaki and N. Katoh, Topology optimization of trusses with stress and local constraints on nodal stability and member intersection, Struct. Multidisc. Optim., Vol. 29, pp. 190-197, 2005.

  221. K. Ikeda, M. Ohsaki and Y. Kanno, Imperfection sensitivity of hilltop branching points of systems with dihedral group symmetry, Int. J. Non-Linear Mech., Vol. 40, pp. 755-774, 2005.

  222. M. Ohsaki and S. Nishiwaki, Shape design of bistable compliant mechanism by utilizing snapthrough behavior, Trans. JSME, A, Vol. 70, No. 700, pp. 23-28, 2004. (in Japanese)

  223. M. Ohsaki, Maximum load factors corresponding to a slightly asymmetric bifurcation point, Int. J. Mech. Sci., Vol. 46, No. 11, pp. 1621-1634, 2004. (in Japanese)

  224. H. Tagawa, T. Kondo and M. Ohsaki, Influence of spatial variatioon of input ground motions on optimum design of space trusses, J. Struct. Constr. Eng., AIJ, No. 500, pp. 85-92, 2004.

  225. J. Takagi and M. Ohsaki, Design of lateral braces for columns considering critical imperfection of buckling, Int. J. Structural Stability and Dynamics, Vol. 4, No. 1, pp. 69-88, 2004.

  226. M. Ohsaki, Sensitivity analysis of an optimized bar-spring model with hill-top branching, Archive of Applied Mechanics, Vol. 73, pp. 241-251, 2003.

  227. M. Ohsaki, Optimum design of flexible structures under constraints on strain energy and asymptotic stability, Comp. Meth. Appl. Mech. Engng., Vol. 192, pp. 4487-4496, 2003.

  228. T. Ogawa, M. Ohsaki, R. Tateishi, Shape optimization of single-layer latticed shells for maximum linear buckling loads and uniform member lengths, J. Struct. Constr. Eng., AIJ, No. 570, pp. 129-136, 2003. (in Japanese)

  229. Y. Kanno and M. Ohsaki, Minimum principle of complementary energy of cable networks by using second-order cone programming, Int. J. Solids and Struct. Vol. 40(17), pp. 4437-4460, 2003.

  230. M. Ohsaki, Earthquake response analysis and optimum design of arch-type trusses considering stiffness of supporting structure, J. Struct. Constr. Eng., AIJ, No. 566, pp. 53-58, 2003. (in Japanese)

  231. J. Fujiwara, M. Ohsaki and K. Uetani, Optimization of retensioning device and shape of membrane structures, J. Struct. Engng., AIJ, Vol. 49B, pp. 335-342, 2003.

  232. I. Ario and M. Ohsaki, Generalization of the modified stiffness method and search of bifurcation paths Based on sensitivity analysis, J. Struct. Engng., AIJ, Vol. 49B, pp. 327-334, 2003. (in Japanese)

  233. M. Ohsaki, T. Ogawa and R. Tateishi, Shape optimization of curves and surfaces considering fairness metrics and elastic stiffness, Struct. Multidisc. Optim., Vol. 24, pp. 449-456, 2003.

  234. M. Ohsaki and J. Fujiwara, Developability conditions for prestress optimization of a curved surface, Comp. Meth. Appl. Mech. Engng., Vol. 192, pp. 77-94, 2003.

  235. M. Ohsaki, Imperfection sensitivity of optimal symmetric braced frames against buckling, Int. J. Non-linear Mech., Vol. 38, pp. 1103-1117, 2003.

  236. F. Aurenhammer, N. Katoh, H. Kojima, M. Ohsaki and Y-F. Xu, Approximating uniform triangular meshes in polygons, Theoretical Computer Science, Vol. 289, pp. 879-895, 2002.

  237. Y. Kanno, M. Ohsaki and J. Ito, Large-deformation and friction analysis of non-linear elastic cable networks by second-order cone programming, Int. J. Numer. Meth. Engng., Vol. 55, pp. 1079-1114, 2002.

  238. Y. Kanno, M. Ohsaki and N. Katoh, Symmetricity of the solution of semidefinite programming, Struct. Multidisc. Optim., Vol. 24, pp. 225-232, 2002.

  239. M. Ohsaki, Structural optimization for specified nonlinear buckling load factor, Japan J. of Industrual and Appl. Math., Vol. 19, No. 2, pp. 163-179, 2002.

  240. J. Fujiwara, M. Ohsaki, T. Mizutani, T. Kitaori, N. Katoh and O. Hosozawa, Prestress and construction order optimization of cable-supported frames, J. Struct. Constr. Eng., AIJ, No. 556, pp. 101-107, 2002. (in Japanese)

  241. M. Ohsaki, Maximum loads of imperfect systems corresponding to stable bifurcation, Int. J. Solids Struct., Vol. 39, pp. 927-941, 2002.

  242. K. Ishii, S. Kato, H. Ohmori, K. Oda, M. Fujimoto, S. Motoyui, M. Ohsaki, S. Nakazawa and Y. Konishi, Response Analysis for Evaluation of Seismic Performance of Frame-Supported Membrane Structures, Research Report on Membrane Structures, No. 15, pp. 1-12, 2001. (in Japanese)

  243. Y. Kanno, M. Ohsaki, K. Murota and N. Katoh, Group symmetry in interior-point methods for semi-definite program, Optimization and Engineering, Vol. 2, pp. 293-320, 2001.

  244. Y. Kanno, M. Ohsaki and N. Katoh, Sequential semidefinite programming for optimization of framed structures under multimodal buckling constraints, Int. J. Structural Stability and Dynamics, Vol. 1, No. 4, pp. 585-602, 2001.

  245. M. Ohsaki, Sensitivity of optimum designs for spatially varying ground motions, J. Struct. Eng., ASCE, Vol. 127(11), pp. 1324-1329, 2001.

  246. Y. Kanno and M. Ohsaki, Necessary and sufficient conditions for global optimality of eigenvalue optimization problems, Struct. Multidisc. Optim., Vol. 22, pp. 248-252, 2001.

  247. J. Fujiwara, M. Ohsaki and K. Uetani, Cutting pattern design of membrane structures considering viscoelasticity of material J. Struct. Constr. Eng., AIJ, No. 544, pp. 103-109, 2001. (in Japanese)

  248. M. Ohsaki, Sensitivity analysis and optimization corresponding to a degenerate critical point, Int. J. Solids Struct., Vol. 38, pp. 4955-4967, 2001.

  249. M. Ohsaki, Sensitivity analysis of coincident critical loads with respect to minor imperfection, Int. J. Solids Struct., Vol. 38, pp. 4571-4583, 2001.

  250. Y. Kanno, M. Ohsaki, K. Fujisawa and N. Katoh, Topology optimization of trusses for specified multiple linear buckling load factors by using semidefinite programming, J. Struct. Constr. Eng., AIJ, No. 541, pp. 113-119, 2001. (in Japanese)

  251. K. Uetani, E. Mitsuda and M. Ohsaki, Cutting pattern optimization of frame-supported membranes considering boundary shape and stress ratio as design parameters, J. Struct. Constr. Eng., AIJ, No. 540, pp. 73-78, 2001. (in Japanese)

  252. M. Ohsaki, Random search method based on exact reanalysis for topology optimization of trusses with discrete cross-sectional areas, Comput. & Struct., Vol. 79(6), pp. 673-679, 2001.

  253. K. Uetani, E. Fujii, M. Ohsaki and J. Fujiwara, Initial stress field determination of membranes using optimization technique, Int. J. Space Structures, Vol. 15(2), pp. 137-143, 2000.

  254. M. Ohsaki, Optimization of geometrically nonlinear symmetric systems with coincident critical points, Int. J. Numer. Meth. Engng., Vol. 48, pp. 1345-1357, 2000.

  255. M. Ohsaki and M. Hayashi, Fairness metrics for shape optimization of ribbed shells, J. Int. Assoc. Shells and Spatial Struct., Vol. 41(1), pp. 31-39, 2000.

  256. M. Ohsaki, H. Tagawa, Y. Kato, Optimum design of structures subjected to spatially varying ground motion, J. Struct. Engng., Vol. 46B, pp. 9-18, 2000. (in Japanese)

  257. M. Ohsaki and K. Uetani, Shape-stress trade-off design of membrane structures for specified sequence of boundary shapes, Comp. Meth. Appl. Mech. Engng., Vol. 182, pp. 73-88, 2000.

  258. M. Ohsaki, J. Fujiwara and T. Kitaori, Optimization of initial stress and equilibrium shape of membrane structures considering fundamental frequency as a measure of stiffness, Research Report on membrane Structures, No. 13, pp. 15-22, 1999. (in Japanese)

  259. M. Ohsaki, Optimum design of elastoplastic trusses subjected to cyclic static loads, J. Struct. Constr. Eng., AIJ, No. 525, pp. 57-62, 1999.

  260. M. Ohsaki, K. Fujisawa, N. Katoh and Y. Kanno, Semi-definite programming for topology optimization of trusses under multiple eigenvalue constraints, Comp. Meth. Appl. Mech. Engng., Vol. 180, pp. 203-217, 1999.

  261. H. Tagawa and M. Ohsaki, Simultaneous optimization of topology and geometry of plane trusses with uniform cross-sectional area, J. Struct. Constr. Eng., AIJ, No. 521, pp. 73-80, 1999. (in Japanese)

  262. M. Ohsaki, Discontinuity in sensitivity of elastoplastic bifurcation loads of finite dimensional symmetric structures, Comp. Mech., Vol. 23, pp. 404-410, 1999.

  263. M. Ohsaki and J. Fujiwara, Shape and stress optimization of membrane structures considering material nonlinearity, Research Report on membrane Structures, No. 12, pp. 1-9, 1998. (in Japanese)

  264. M. Ohsaki, K. Uetani and M. Takeuchi, Optimization of imperfection-sensitive symmetric systems for specified maximum load factor, Comp. Meth. Appl. Mech. Engng., Vol. 166, pp. 349-362, 1998.

  265. M. Ohsaki, Tsuneyoshi nakamura and Y. Isshiki, Shape-size optimization of plane trusses with designer's preference, J. Struct. Engng., ASCE, Vol. 124, No. 11, pp. 1323-1330, 1998.

  266. M. Ohsaki, Facility layout optimzation based on Markov chain model and genetic algotithm, J. Archit. Plann. Environ. Eng., AIJ, No. 510, pp. 251-258, 1998.

  267. M. Ohsaki, Simultaneous optimization of topology and geometry of a regular plane truss, Comput. & Struct., Vol. 66(1), pp. 69-77, 1998.

  268. M. Ohsaki and M. Yamakawa, Optimization of initial stresses and cutting patterns of membrane structures considering stiffness under static loads, Research Report on membrane Structures, No. 11, pp. 31-38, 1997. (in Japanese)

  269. M. Ohsaki, Tsuneyoshi Nakamura and M. Kohiyama, Shape optimization of a double-layer space truss described by a parametric surface, Int. J. Space Structures, Vol. 12(2), pp. 109-119, 1997.

  270. M. Ohsaki, Sensitivity analysis of elastoplastic structures by using explicit integration method, Appl. Mech. Rev., Vol. 50(11), pp. 156-161, 1997.

  271. M. Ohsaki, Optimization of building structural systems using parametric optimization method, J. Structural Engineering, AIJ, Vol. 43B, pp. 79-88, 1997. (in Japanese)

  272. M. Ohsaki, K. Uetani, S. Takatani, Shape-stress trade-off design method of membrane structures by using inverse problem approach, J. Struct. Constr. Eng., AIJ, No. 488, pp. 107-115, 1996. (in Japanese)

  273. M. Ohsaki and Tsuneyoshi Nakamura, Shape design of a cable network with boundary cables for specified bounady shape and pretensioning forces, J. Structural Engineering, Vol. 42B, pp. 287-294, 1996. (in Japanese)

  274. M. Ohsaki and K. Uetani, Sensitivity analysis of bifurcation load of finite dimensional symmetric systems, Int. J. Num. Meth. Engng., Vol. 39, pp. 1707-1720, 1996.

  275. M. Ohsaki and Tsuneyoshi Nakamura, Minimum constraint perturbation method for topology optimization of systems, Eng. Opt., Vol. 26, pp. 171-186, 1996.

  276. M. Ohsaki, A higher order expansion method for structural optimization for specified fundamental eigenvalue, Eng. Opt., Vol. 26, pp. 123-136, 1996.

  277. M. Ohsaki, Sensitivity analysis of an elasto-plastic truss with respect to material constants, J. Steel Structures, Vol. 3, pp. 31-36, 1995. (in Japanese)

  278. M. Ohsaki and K. Uetani, Design sensitivity analysis of elasto-plastic trusses using the incremental perturbation method, J. Struct. Constr. Eng., AIJ, No. 477, pp. 49-56, 1995.

  279. M. Ohsaki, Genetic algorithm for topology optimization of trusses, Comput. & Struct, Vol. 57(2), pp. 219-225, 1995.

  280. M. Ohsaki and Tsuneyoshi Nakamura, Shape design method of cable networks for specified prestresses, J. Structural Engineering, Vol. 41B, pp. 199-206, 1995. (in Japanese)

  281. M. Ohsaki, Design sensitivity analysis and optimization of structural systems with discontinuous properties, J. Struct. Constr. Eng., AIJ, No. 465, pp. 147-153, 1994. (in Japanese)

  282. M. Ohsaki, Object-oriented design system for trusses based on sequential generation of designs, J. Steel Structures, Vol. 2, pp. 441-448, 1994. (in Japanese)

  283. M. Ohsaki, Genetic algorithm for structural optimization with a discontinuous cost function, J. Struct. Constr. Eng., AIJ, No. 464, pp. 119-127, 1994. (in Japanese)

  284. M. Ohsaki and Tsuneyoshi Nakamura, Optimum design with imperfection sensitivity coefficients for limit point loads, Structural Optimization, Vol. 8, pp. 131-137, 1994.

  285. M. Ohsaki, Tsuneyoshi Nakamura and M. Taki, Sequential generation of response strain-acceleration constrained trusses for multicomponent design earthquakes, J. Struct. Constr. Eng., AIJ, No. 456, pp. 39-50, 1994. (in Japanese)

  286. M. Ohsaki and J. S. Arora, Design sensitivity analysis of elasto-plastic structures, Int. J. Numer. Meth. Engng, Vol. 37, pp. 737-762, 1994.

  287. M. Ohsaki and J. S. Arora, A direct application of higher order parametric programming techniques to structural optimization, Int. J. Numer. Meth. Engng, Vol. 36, pp. 2683-2702, 1993.

  288. Tsuneyoshi Nakamura, M. Ohsaki and T. Masui, Inverse generation of earthquake-strain constrained designs of a distributed parameter structure for a sequence of design strain functions, Comp. Meth. Appl. Mech. Engng., Vol. 98(1), pp. 1-21, 1992.

  289. Tsuneyoshi Nakamura and M. Ohsaki, A natural generator of optimum topology of plane trusses for specified fundamental frequency, Comp. Meth. Appl. Mech. Engng., Vol. 94(1), pp. 113-129, 1992.

  290. Tsuneyoshi Nakamura and M. Ohsaki, Sequential generator of earthquake-response constrained trusses for design strain ranges, Comput. & Struct., Vol. 33(6), pp. 1403-1416, 1989.

  291. Tsuneyoshi Nakamura and M. Ohsaki, Sequential generation of optimal circular cylindrical trusses for frequency ranges with radius as a subparameter, J. Structural Engineering, Vol. 35B, pp. 103-110, 1989. (in Japanese)

  292. Tsuneyoshi Nakamura and M. Ohsaki, Sequential optimal truss generator for frequency ranges, Comp. Meth. Appl. Mech. Engng., Vol. 67(2), pp. 189-209, 1988.