Conference Papers
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J. Y. Zhang and M. Ohsaki, Generation of planar quadrilateral mesh using
tensegrity model, Proc. IASS Symposium 2024, Zurich,
Switzerland, Int. Assoc. Shell and Spatial Struct., Paper No. 111, 2024.
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K. Hayakawa and M. Ohsaki, Origami-based flat foldable structure with
non-flat singular point of rigid folding mechanism, Proc. IASS Symposium
2024, Zurich, Switzerland, Int. Assoc. Shell and Spatial Struct.,
Paper No. 133, 2024.
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K. Kabaki, K. Hayakawa, M. Ohsaki, Y. Jikumaru and Y. Yokosuka,
Design of gridshells consisting of planar curves using Laguerre geometry,
Proc. IASS Symposium 2024, Zurich, Switzerland, Int. Assoc. Shell and
Spatial Struct., Paper No. 340, 2024.
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R. Watada and M. Ohsaki, Sequential generation method for hexagonal
lattice shells with edge offset mesh, Proc. IASS Symposium 2024, Zurich,
Switzerland, Int. Assoc. Shell and Spatial Struct., Paper No. 365, 2024.
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Z. He, K. Hayakawa and M. Ohsaki, When will the existence of a non-trivial
state guarantee a continuous motion for a quad-mesh rigid origami?,
Proc. 8th International Meeting on Origami in Science, Mathematics and
Education (8OSME), Melbourne, Australia, 2024.
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K. Hayakawa and M. Ohsaki, Shape optimization of rigid origami for
approximate self-foldability under gravity, Proc. 8th International
Meeting on Origami in Science, Mathematics and Education (8OSME),
Melbourne, Australia, 2024.
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T. Oba, K. Hayakawa and M. Ohsaki, Higher-order infinitesimal mechanism
of rigid origami and polynomial approximation of its folding path,
Proc. 8th International Meeting on Origami in Science, Mathematics and
Education (8OSME), Melbourne, Australia, 2024.
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M. Ohsaki, K. Hayakawa and J. Y. Zhang, Non-parametric structural
shape optimization of piecewise developable surfaces using
discrete differential geometry, Proc. Asian Congress of Structural
and Multidisciplinary Optimization (ACSMO 2024), Zhengzhou, China,
Paper B40314, 2024.
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T. Matsuoka, M. Ohsaki and K. Hayashi, Topology optimization of
periodic lattice structures for specified mechanical properties
considering member connectivity, Proc. Asian Congress of Structural
and Multidisciplinary Optimization (ACSMO 2024), Zhengzhou, China,
Paper B60370, 2024.
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M. Ohsaki, K. Hayakawa and J. Y. Zhang,
Nonparametric shape optimization of piecewise developable surfaces
for maximum stiffness using discrete differential geometry,
Proc. IASS Symposium 2023, Melbourne, Australia, Int. Assoc. Shell and
Spatial Struct., pp. 1452-1456, 2023.
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T. Nakajima and M. Ohsaki,
Form finding and structural analysis of free-form shells with
specified horizontal projected stress distribution,
Proc. IASS Symposium 2023, Melbourne, Australia, Int. Assoc. Shell and
Spatial Struct., pp. 1351-1360, 2023.
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C. Kupwiwat, K. Hayashi and M. Ohsaki,
Sizing optimization of free-form lattice shells using deep
deterministic policy gradient and graph convolutional networks,
Proc. IASS Symposium 2023, Melbourne, Australia, Int. Assoc. Shell and
Spatial Struct., pp. 1458-1468, 2023.
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R. Watada and M. Ohsaki, Shape generation of hexagonal lattice shell
consisting of edge offset mesh
Proc. IASS Symposium 2023, Melbourne, Australia, Int. Assoc. Shell and
Spatial Struct., pp. 244-250, 2023.
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K. Hayashi and M. Ohsaki, Isogeometric deep learning framework to
predict the structural performance of free-form surfaces,
Proc. IASS Symposium 2023, Melbourne, Australia, Int. Assoc. Shell and
Spatial Struct., pp. 1361-1369, 2023.
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M. Ohsaki, K. Hayashi, Y. Jikumaru, T. Kagaya and Y. Yokosuka,Gaussian
curvature flow for constant Gaussian curvature surface with triangular
mesh, Proc. IASS 2022 and APCS 2022, Beijing, Int. Assoc. Shell and
Spatial Struct., Paper ID 28, pp. 1847-1855, 2022.
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Y. Sakai and M. Ohsaki, A shape design method of discrete cylindrical
structures tiled with auxetic hexagonal units, Proc. IASS 2022 and APCS
2022, Beijing, Int. Assoc. Shell and Spatial Struct.,
Paper ID 116, pp. 1924-1935, 2022.
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K. Hayakawa and M. Ohsaki, Form generation of rigid origami reflecting
the mean curvature and feature lines of target surface, Proc. IASS 2022
and APCS 2022, Beijing, Int. Assoc. Shell and Spatial Struct.,
Paper ID 225, pp. 2382--2393, 2022.
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R. Watada and M. Ohsaki, Design of N-fold-symmetric multi-layered hinge
frame deployable from bundle to arbitrary surface of revolution, Proc. IASS
2022 and APCS 2022, Beijing, Int. Assoc. Shell and Spatial Struct.,
Paper ID 74, pp. 2294-2301, 2022.
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J. Y. Zhang and M. Ohsaki, An efficient method for design of discrete
developable surfaces by Ricci flow, Proc. IASS Symposium 2021, Surrey, UK,
Int. Assoc. Shell and Spatial Struct., pp. 2096-2101, 2021.
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J. Cui, Y. Luo and M. Ohsaki, Morphological research on developable free-form
surface structure composed of plates, Proc. IASS Symposium 2021, Surrey, UK,
Int. Assoc. Shell and Spatial Struct., pp. 2525-2531, 2021.
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S. Fujita and M. Ohsaki, Development of OpenSees component for Grasshopper
for various types of computational morphogenesis, Proc. IASS Symposium 2021,
Surrey, UK,Int. Assoc. Shell and Spatial Struct., pp. 2194-2204, 2021.
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K. Hayakawa and M. Ohsaki, Form generation of rigid origami by multiobjective
optimization for approximating curved surface, Proc. IASS Symposium 2021,
Surrey, UK, Int. Assoc. Shell and Spatial Struct., pp. 2743-2754, 2021.
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Y. Yokosuka, J. Inoguchi, M. Ohsaki and T. Honma, Gridshell structures with
discrete curvature lines: Modelling technique and evaluation of mechanical
performance, Proc. IASS Symposium 2021, Surrey, UK, Int. Assoc. Shell
and Spatial Struct., pp. 821-833, 2021.
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K. Hayashi and M. Ohsaki, Reinforcement learning for optimal topology design
of 3D trusses, Proc. IASS Symposium 2021, Surrey, UK, Int. Assoc. Shell
and Spatial Struct., pp. 2261-2273, 2021.
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M. Ohsaki and K. Hayakawa, Non-parametric shape design of free-form shells
using fairness metrics and discrete differential geometry, Proc.
IASS Symposium 2021, Surrey, UK, Int. Assoc. Shell and Spatial Struct.,
pp. 2474-2479, 2021.
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M. Yamakawa and M. Ohsaki, Fail-safe topology optimization via
order statistics with stochastic gradient descent, Proc. Asian
Congress of Structural and Multidisciplinary Optimization
(ACSMO 2020), Online, Paper W1D-2, pp. 254-259, 2020.
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M. Ohsaki, T. Mikami, H. Tagawa and J. Fujiwara, Topology optimization of
latticed steel wall with contact to existing beams and columns of RC frame,
Proc. 17th World Conf. on Earthquake Eng. (17WCEE), Sendai, Japan,
Paper No. 2c-0067, 2020.
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J. Takagi and M. Ohsaki, Comparison of sperior steel building design solutions
for different lateral frame systems and column shapes,
Proc. 17th World Conf. on Earthquake Eng. (17WCEE), Sendai, Japan,
Paper No. 2c-0085, 2020.
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Y. Kanno, M. Ohsaki and J. K. Guest, Unified treatment of some
different fabrication-cost functions in truss topology
optimization, Proc. IASS Symposium 2019, Barcelona, Spain,
Int. Assoc. Shell and Spatial Struct., pp. 2100--2107,
Paper No. 166, 2019.
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M. Ohsaki, J. Y. Zhang, K. Kogiso and J. J. Rimoli,
Optimization of tensegrity lattice with truncated octahedral
units, Proc. IASS Symposium 2019, Barcelona, Spain,
Int. Assoc. Shell and Spatial Struct., pp. 658--665,
Paper No. 186, 2019.
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K. Hayakawa and M. Ohsaki, Frame model for analysis and
form generation of rigid origami for deployable roof
structures, Proc. IASS Symposium 2019, Barcelona, Spain,
Int. Assoc. Shell and Spatial Struct., pp. 1061--1068,
Paper No. 177, 2019.
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K. Hayakawa and M. Ohsaki, Optimization approach to form generation
of rigid-foldable origami for deployable roof structure,
Proc. 13th World Congress of Structural and Multidisciplinary
Optimization (WCSMO13), Beijing, Paper No. A050332, 2019.
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R. Watada, M. Ohsaki and Y. Kanno, Group theoretic approach to
detecting finite mechanisms of bar-hinge models of retractable
structures, Proc. 12th Asian Pacific Conf. on Shell and Spatial
Struct. (APCS 2018), pp. 165-173, 2018.
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M. Ohsaki, T. Kimura and Y. Otsuka, Optimization of support
structure for reduction of reaction force of roof of a school
gymnasium, Proc. 12th Asian Pacific Conf. on Shell and Spatial
Struct. (APCS 2018), pp. 348-353, 2018.
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K. Hayashi and M. Ohsaki, Structural performance of triangular
latticed shells with regularized panels for Bezier design
surface, Proc. 12th Asian Pacific Conf. on Shell and Spatial
Struct. (APCS 2018), pp. 337-347, 2018.
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T. Kimura, M. Ohsaki and Y. Yamaoka, Shape and topology optimization
of shear wall considering of latticed blocks,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 234, 2018.
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J. Zhang and M. Ohsaki, Free-form design of tensegrity --
inspired by Slelson's works,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 42, 2018.
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Y. Sakai and M. Ohsaki, Approximate shape design of gridshells
using spatial elastica,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 143, 2018.
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M. Ohsaki, K. Hayashi and C. Mueller, FDMOPT: A new tool
for simultaneous optimization of geometry and topology of
truss structures, Proc. IASS Symposium 2018, Boston, USA,
Int. Assoc. Shell and Spatial Struct., Paper No. 249, 2018.
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R. Watada and M. Ohsaki, Series expansion of regular 2N-gonal
frame with inclined joints foldable into straight shape,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 270, 2018.
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K. Hayashi and M. Ohsaki, Regularization of latticed shell
panels for Bezier surfaces,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 088 2018.
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Q. Ma, M. Ohsaki, Z. Chen and X. Yan, Step-bystep unbalanced
force iteration for asymmetric cable dome structures,
Proc. IASS Symposium 2018, Boston, USA, Int. Assoc. Shell and
Spatial Struct., Paper No. 252, 2018.
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K. Watanabe, M. Yamakawa, K. Yamada and M. Ohsaki, Robust design
optimization of moment-registing steel frame considering uncertain
properties of surface ground based on order statistics, Proc.
Asian Congress of Structural and Multidisciplinary Optimization
(ACSMO 2018), Dalian, China, Paper No. A030071, 2018.
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K. Hayashi, M. Ohsaki and C. Mueller, Force density method for
simultaneous optimization of geometry and topology of spatial trusses,
Proc. IASS Symposium 2017, Hamburg, Germany, Int. Assoc. Shell and
Spatial Struct., Paper No. 9493, 2017.
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M. Ohsaki, S. Saburi and F. Takeda, Approximate method for cutting
pattern optimization of membrane structures,
Proc. IASS Symposium 2017, Hamburg, Germany, Int. Assoc. Shell and
Spatial Struct., Paper No. 9503, 2017.
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J. Y. Zhang, M. Ohsaki and Z. Li, Optimization of large-scale transmission
tower using simulated annealing,
Proc. IASS Symposium 2017, Hamburg, Germany, Int. Assoc. Shell and
Spatial Struct., Paper No. 9554, 2017.
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Y. Sakai and M. Ohsaki, Discrete elastica model for shape design
of grid shells,
Proc. IASS Symposium 2017, Hamburg, Germany, Int. Assoc. Shell and
Spatial Struct., Paper No. 9557, 2017.
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J. Cui and M. Ohsaki, An optimization method for generating
self-equilibrium shape of curved surface from developable surface,
Proc. IASS Symposium 2017, Hamburg, Germany, Int. Assoc. Shell and
Spatial Struct., Paper No. 9574, 2017.
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Y. Miyazu, M. Ohsaki and S. Tsusa, Topology optimization of supporting
structures for seismic response reduction of spatial structures,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS1F-1069, 2016.
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K. Nakamura, M. Ohsaki and J. Cui, Shape optimization of free-form shells
consisting of developable surfaces,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS2E-1057, 2016.
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J. Cui, G. Zhou and M. Ohsaki, Design of tree-type support structure of
free-form shell generated using fractal geometry,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS3Y-1031, 2016.
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R. Watada and M. Ohsaki, Series expansion method for determination of
order of mechanism with partially rigid joints,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS5G-1330, 2016.
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M. Ohsaki, K. Seki and Y. Miyazu, Optimization of locations of slot
connections of gridshells modeled using elastica,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS5A-1012, 2016.
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S, Fujita, M. Ohsaki and K. Seki, Shape optimization of latticed
shells consisting of ruled surface,
Proc. IASS Symposium 2016, Tokyo, Int. Assoc. Shell and Spatial
Struct., Paper No. CS6M-1251, 2016.
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M. Yamakawa and M. Ohsaki, Worst-case analysis with linear constraints
based on the k-th order statistics, Proc. Asian Congress of Structural
and Multidisciplinary Optimization (ACSMO 2016), Nagasaki, Japan,
Paper No. 3E-1, 2016.
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Y. Yamaoka, M. Ohsaki and Y.b Kanno, Optimization approach to design of
linkage mechanisms with arbitrarily inclined hinges, Proc. Asian
Congress of Structural and Multidisciplinary Optimization (ACSMO 2016),
Nagasaki, Japan, Paper No. 1D2-3, 2016.
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J. Takagi and M. Ohsaki, Simulated annealing for evaluation of
structural characteristics of steel buildings with different lateral
frame systems, Proc. Asian Congress of Structural and Multidisciplinary o
Otimization (ACSMO 2016), Nagasaki, Japan, Paper No. 2D3-4, 2016.
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Y.Miyazu, A.Itou, S.Soda and M.Ohsaki, Seismic response control of
buildings using mechanical linkages with passive dampers,
Proc. Tenth Pacific Conference on Earthquake Engineering, Sydney,
Australia, Paper No. 49, 2015.
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M. Ohsaki, Y. Miyazu, S. Tomoda and S. Tsusa, Design of deployable
structures using limit analysis of partially rigid frames with
quadratic yield functions, Proc. IASS Symposium 2015, Amsterdam,
Netherlands, Int. Assoc. Shell and Spatial Struct., Paper No. 498683, 2015.
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S. Tsuda, Y. Nakahara and M. Ohsaki, Deployable bar structure with
partially rigid connection developed from origami, Proc. IASS
Symposium 2015, Amsterdam, Netherlands, Int. Assoc. Shell and
Spatial Struct., Paper No. 500881, 2015.
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T. Mikami, M. Ohsaki and K. Fukushima, Shape optimization of latticed
blocks for seismic retrofit of building frames, Proc. IABSE Conference
Nara 2015, Int. Assoc., Bridge and Struct. Eng., Paper No. IA-10, 2015.
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K. Seki, M. Ohsaki and S. Fujita, Shape optimization of ruled
surface considering static stiffness, Proc. 11th Asian Pacific
Conf. on Shell and Spatial Struct (APCS 2015), pp. 269-274, 2015.
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J. Y. Zhang and M. Ohsaki, Free-form design of tensegrity structures
by combination of non-linear analysis and optimization techniques,
Proc. 11th Asian Pacific Conf. on Shell and Spatial Struct
(APCS 2015), pp. 339-344, 2015.
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A. Matsuo, M. Ohsaki, Y. Miyazu, Optimization of elastically deformed
gridshell with partially released joints, Proc. IASS WG. 12+18
International Colloquium 2015, Tokyo, Paper No. 15T-03, 2015.
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M. Kohiyama, M. Ohsaki, T. Miyamura and T. Yamashita, Finite element analysis of
damping mechanism of autoclaved lightweight aerated concrete panels for exterior walls
of steel structures, Proc. 11th World Congress of Computational Mechanics (WCCM11),
Barcelona, Spain, Paper No. 1137, 2014.
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M. Ohsaki, J. Y. Zhang and T. Taguchi, Form-finding and stability analysis of
tensegrity structures using nonlinear programming and fictitious material properties,
Proc. 5th Int. Conf. on Computational Mechanics (ICCM2014), Cambridge, UK,
Paper No. 89, 2014.
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M. Yamakawa, M. Tatibana, K. Hukazawa, M. Nihei, M. Ohsaki, T. Nakamura
and H. Yamanouchi, Parameter identification and numerical analysis of
spring steel damper with a heuristic optimization approach,
Proc. 8th China-Japan-Korea Joint Symposium on Optimization of Structural
and Mechanical Systems (CJK-OSM8), Gyeongju, Korea, Paper No. 0104, 2014.
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Y. Taniguchi, M. Ohsaki and M. Yamakawa, Robust design optimization of
building frames using order statistics and local search,
Proc. 8th China-Japan-Korea Joint Symposium on Optimization of Structural
and Mechanical Systems (CJK-OSM8), Gyeongju, Korea, Paper No. 0059, 2014.
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T. Hasegawa, M. Ohsaki and S. Tsuda, Parameter optimization of
three-directional tuned mass damper for seismic response control,
Proc. 8th China-Japan-Korea Joint Symposium on Optimization of Structural
and Mechanical Systems (CJK-OSM8), Gyeongju, Korea, Paper No. 0058, 2014.
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M. Ohsaki, J. Nozoe and H. Watanabe, FE-analysis and experiment of optimized and
standard link members of K-brace for passive seismic energy dissipation,
Proc. Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE2014),
Sendai, Japan, pp. 606-609, 2014.
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S. Tsuda, M. Ohsaki and Y. Kanno, Analysis and design of deployable frames
with partially rigid connections, Proc. IASS Symposium 2013, Wroclaw, Poland,
Int. Assoc. Shell and Spatial Struct., Paper No. 1206, 2013.
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J. Y. Zhang and M. Ohsaki, Free-form design of tensegrity structures by
non-rigid-body motion analysis, Proc. IASS Symposium 2013, Wroclaw, Poland,
Int. Assoc. Shell and Spatial Struct., Paper No. 1306, 2013.
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M. Ohsaki, S. Tsuda and N. Sugiyama, Parameter optimization of
geometrically nonlinear tuned mass damper for multi-directional
seismic vibration control, Proc. 13th East Asia-Pacific Conference on
Structural Engineering and Construction (EASEC13), Sapporo, Japan,
Paper No. A-1-1, 2013.
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T. Miyamura, M. Ohsaki, T. Yamashita, D. Isobe and M. Kohiyama,
Dynamic collapse analysis of four-story steel frame using E-Simulator,
Proc. 4th Int. Conf. on Computational Methods in Structural Dynamics and
Earthquake Engineering (CompDyn2013), Kos, Greece, Paper No. 1494, 2013.
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M. Ohsaki, T. Miyamura, M. Kohiyama, T. Yamashita, M. Yamamoto and
N. Nakamura, High-precision finite-element analysis of rubber
bearing for base-isolation of building structures,
Proc. 4th Int. Conf. on Computational Methods in Structural Dynamics and
Earthquake Engineering (CompDyn2013), Kos, Greece, Paper No. 1205, 2013.
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M. Ohsaki, Y. Kanno and S. Tsuda, linear programming approach to design of
link mechanisms of partially rigid frames, Proc. 10th World Congress of
Structural and Multidisciplinary Optimization (WCSMO10), Orlando, Paper No.
5137, 2013.
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R. Kohta, M. Yamakawa, N. Katoh, Y. Araki and M. Ohsaki, A Design method for
optimal truss structures with certain redundancy based on combinatorial
rigidity theory, Proc. 10th World Congress of Structural and
Multidisciplinary Optimization (WCSMO10), Orlando, Paper No. 5163, 2013.
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M. Yamakawa and M. Ohsaki, Worst-case design of structures using stopping
rules in k-adaptive random sampling approach, Proc. 10th World Congress of
Structural and Multidisciplinary Optimization (WCSMO10), Orlando, Paper
No. 5314, 2013.
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H. Watanabe, M. Ohsaki and J. Nozoe, Shape optimization of energy dissipation
devices for passive seismic control of building frames, Structures Congress
2013, ASCE, Pittsburg, Paper No. 2487, 2013.
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M. Katsura, M. Ohsaki and H. Watanabe, Optimization of an arch-type truss under
seismic excitations considering uncertainties of geometrical and material parameters,
Proc. Int. Symp. Reliability Eng. Risk Management (ISRERM'2012), Yokohama, Paper
No. P092, 2012.
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M. Ohsaki, M. Kohiyama, T. Miyamura, T. Yamashita and H. Akiba, High-precision
FE-analysis for global and local elastoplastic responses of building frames,
Proc. Int. Symp. Reliability Eng. Risk Management (ISRERM'2012), Yokohama, Paper
No. P093, 2012.
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H. Watanabe, M. Ohsaki, J. Nozoe and S. Yasuda, Shape optimization of shear-type
hysteretic steel damper for building frames using FEM-analysis and heuristic approach,
Proc. 7th China-Japan-Korea Joint Symposium on Optimization of
Structural and Mechanical Systems (CJK-OSM7), Huangshan, China,
Paper No. J061, 2012.
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M. Ohsaki, J. Y. Zhang, T. Miyamura, A heuristic algorithm for parameter
identification of steel materials under asymmetric cyclic elastoplastic deformation,
Proc. 7th China-Japan-Korea Joint Symposium on Optimization of
Structural and Mechanical Systems (CJK-OSM7), Huangshan, China,
Paper No. J045, 2012.
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J. Y. Zhang and M. Ohsaki, Analytical conditions for self-equilibrium and
super-stability of tensegrity structures with tetrahedral symmetry,
Proc. IASS-APCS 2012, Seoul, Paper No. 007, 2012.
-
S. Tsuda and M. Ohsaki, Bi-directional seismic vibration control of spatial
structures using passive mass damper consisting of compliant mechanism,
Proc. IASS-APCS 2012, Seoul, Paper No. 109, 2012.
-
J. Y. Zhang and M. Ohsaki, Free-form design of tensegrity structures by
dynamic relaxation method, Proc. IACM-IASS2012, pp. 406-409, 2012.
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M. Ohsaki, N. Ashiya, S. Matsumoto and S. Fujita, Stability of latticed shell
with uniform-length hexagonal grid, paper No. P-0221, Proc. IABSE-IASS
Symposium, London, 2011.
-
J. Y. Zhang, S. D. Guest, M. Ohsaki and R. Connelly, Multi-stable star-shaped
tensegrity structures, paper No. P-0614, Proc. IABSE-IASS Symposium,
London, 2011.
-
J. Y. Zhang and M. Ohsaki, Form-finding methods for tensegrity structures:
Our challenges, Structural Morphology Group International Seminar, London,
2011.
-
T. Yamashita, M. Ohsaki, T. Miyamura, M. Kohiyama and J. Y. Zhang,
Finite element model of steel-concrete composite beam for high-precision
seismic response analysis of four-story steel frame,
Proc. Int. Symp. on Disaster Simulation & Structural Safety in the Next
Generation (DS11), Kobe, Japan, 2011.
-
M. Ohsaki, T. Miyamura, M. Kohiyama, J. Y. Zhang, D. Isobe, K. Onda, T.
Yamashita, M. Hori, H. Akiba and K. Kajiwara, High-precision FE-analysis of
steel frames: Collapse simulation considering composite beam effect, Proc.
6th European Conference on Steel and Composite Structures (EuroSteel 2011),
Budapest, pp. 921-926, 2011.
-
J. Y. Zhang and M. Ohsaki, Probability-based optimal design of
moment-resisting frames using kriging approximation model, Proc. 9th World
Congress of Structural and Multidisciplinary Optimization (WCSMO9), Shizuoka,
Paper No. 167_1, 2011.
-
M. Katsura and M. Ohsaki, Optimum design of steel frames considering
uncertainty of parameters, Proc. 9th World Congress of Structural and
Multidisciplinary Optimization (WCSMO9), Shizuoka, Paper No. 081_2, 2011.
-
M. Ohsaki and T. Nakajima, Optimization of energy dissipation property of
eccentrically braced steel frames, Proc. 9th World Congress of Structural and
Multidisciplinary Optimization (WCSMO9), Shizuoka, Paper No. 081_1, 2011.
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T. Yamashita, T. Miyamura, M. Ohsaki, M. Kohiyama, D. Isobe, K. Onda,
M. Hori, J.Y. Zhang, H. Akiba and K. Kajiwara, High-precision FE-analysis
for seismic collapse simulation of steel building frames, Proc. 3rd
Int. Conf. on Computational Methods in Structural Dynamics and Earthquake
Engineering (CompDyn2011), Corfu, Greece, Paper No. 098, 2011.
-
M. Ohsaki and S. Fujita, Multiobjective shape optimization of latticed
shells for elastic stiffness and uniform member lengths,
Proc. Int. Symposium on Algorithmic Design for Architecture and
Urban Design (ALGODE TOKYO 2011), 2011.
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T. Nakajima, M. Ohsaki, J. Fujiwara and F. Takeda, Configuration
optimization of clamping members of frame-supported membrane
structures, Proc. IASS Symposium 2010, Shanghai, China,
Int. Assoc. Shell and Spatial Struct., pp. 661-672, 2010.
-
J. Fujiwara, T. Nakajima, M. Ohsaki and F. Takeda, Continuum shape
optimization of clamping members of membrane structures under stress
constraints, Proc. IASS Symposium 2010, Shanghai, China,
Int. Assoc. Shell and Spatial Struct., pp. 673-683, 2010.
-
F. Tsuura, J. Y. Zhang and M. Ohsaki, Self-equilibrium and stability
of tensegrity structures with polyhedral symmetries,
Proc. IASS Symposium 2010, Shanghai, China,
Int. Assoc. Shell and Spatial Struct., pp. 2416-2424, 2010.
-
J. Y. Zhang and M. Ohsaki, Reliability-based design of single-layer
lattice shells using Kriging approximation,
Proc. IASS Symposium 2010, Shanghai, China,
Int. Assoc. Shell and Spatial Struct., pp. 1605-1613, 2010.
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M. Kohiyama, M. Ohsaki, T. Miyamura, K. Onda, D. Isobe, H. Akiba, M. Hori,
K. Kajiwara and T. Ine, Dynamic property evaluations of full-scale 4-story
steel frame using parallel FE-analysis, Proc. 9th US National and 10th
Canadian Conf. on Earthquake Engineering, Toronto, Canada, Paper No. 1740,
2010.
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R. Watada, M. Ohsaki and Y. Kanno, Uniqueness and symmetry of optimal
thickness distribution of axisymmetric shells, Proc. 6th
China-Japan-Korea Joint Symposium on Optimization of Structural and
Mechanical Systems (CJK-OSM6), Kyoto, Japan;
Paper No. J28, 2010.
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T. Nakajima, M. Ohsaki, J. Fujiwara and F. Takeda, Configuration
optimization of anchoring devices of frame-supported membrane
structures for maximum clamping force, Proc. 6th
China-Japan-Korea Joint Symposium on Optimization of Structural and
Mechanical Systems (CJK-OSM6), Kyoto, Japan, Paper No. J02, 2010.
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J. Y. Zhang, M. Ohsaki and I. Elishakoff, Multiobjective hybrid
optimization-antioptimization for force design of tensegrity
structures, Proc. 6th China-Japan-Korea Joint Symposium on
Optimization of Structural and Mechanical Systems (CJK-OSM6), Kyoto,
Japan; Paper No. J09, 2010.
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S. Fujita and M. Ohsaki, Shape optimization of shells considering
quantity of local geometric characteristics, Proc. 6th
China-Japan-Korea Joint Symposium on Optimization of Structural and
Mechanical Systems (CJK-OSM6), Kyoto, Japan;
Paper No. J29, 2010.
-
T. Yamashita, T. Kumagai, T. Ogawa, T. Miyamura and M. Ohsaki,
Shape optimization of long-span translational free-form shell roofs
in strong wind using multigrid method and variable complexity model,
Proc. 6th China-Japan-Korea Joint Symposium on Optimization of
Structural and Mechanical Systems (CJK-OSM6), Kyoto, Japan;
Paper No. J07, 2010.
-
J. Fujiwara, T. Nakajima, M. Ohsaki and F. Takeda,
Shape optimization of clamping members of frame-supported membrane
structures under stress constraints,
Proc. 6th China-Japan-Korea Joint Symposium on Optimization of
Structural and Mechanical Systems (CJK-OSM6), Kyoto, Japan;
Paper No. J20, 2010.
-
T. Kinoshita and M. Ohsaki, Topology optimization of compliant
mechanisms with sequentially connected units,
Proc. Int. Conf. Computational Design in Eng. (CODE2009), Seoul,
pp. 13-16, 2009.
-
R. Watada and M. Ohsaki, Continuation approach for investigation of
non-uniqueness and symmetry of optimal topology for minimum
compliance, Proc. Int. Conf. Computational Design in Eng. (CODE2009), Seoul,
pp. 17-20, 2009.
-
J. Y. Zhang and M. Ohsaki, Reliability-based optimization of spatial
structures using approximation model, in:
Proc. IASS Symposium 2009, Int. Assoc. for Shell
and Spatial Struct., Valencia, Spain, pp. 378-3872009, 2009.
-
S. Fujita and M. Ohsaki, Shape optimization of free-form shells
considering algebraic invariants of parametric surface, in:
Proc. IASS Symposium 2009, Int. Assoc. for Shell
and Spatial Struct., Valencia, Spain, pp. 525-535, 2009.
-
T. Hikino, M. Ohsaki, K. Kasai and M. Nakashima, Simulation of
E-Defense full-scale shake-table test results of moment-resisting
steel frame, Proc. Behavior of Steel Structures in Seismic
Areas, STESSA 2009, Philadelphia, Taylor \& Francis, pp. 137-143, 2009.
-
Y. Kanno and M. Ohsaki, A sequential second-order cone programming
for stability analysis of nonsmooth mechanical systems,
Proc. 8th World Congress of Structural and Multidiaciplinary
Optimization (WCSMO8), lisbon, Paper No. 1066, 2009.
-
R. Watada and M. Ohsaki, Continuation approach for investigation of
non-uniqueness of optimal topology for minimum compliance,
Proc. 8th World Congress of Structural and Multidiaciplinary
Optimization (WCSMO8), lisbon, Paper No. 1073, 2009.
-
M. ohsaki, A. Uchida and J. Y. Zhang, Multi-modal multi-pattern
pushover analysis for seismic design of spatial frames, in:
Proc. 9th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2009),
Paper No. P0036, 2009.
-
J. Y. Zhang, M. Ohsaki, S. D. Guest and R Connell,
Stability of tensegrity structures with dihedral symmetry,
Proc. 9th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2009),
Paper No. P0023, 2009.
-
R. Watada and M. Ohsaki, Topology optimization of trusses consisting
of traditional layouts,
Proc. 9th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2009),
Paper No. P0026, 2009.
-
S. Fujita and M. Ohsaki, Shape optimization of shells considering
strain energy and algebraic invariants of parametric surface,
Proc. 9th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2009),
Paper No. P0012, 2009.
-
T. Kinoshita, M. Ohsaki and T. Nakajima, Topology optimization of
compliant mechanisms for seismic isolation of spatial structures,
Proc. 9th Asian Pacific Conf. on Shell and Spatial Struct (APCS 2009),
Paper No. 30, 2009.
-
M. Ohsaki, J. Y. Zhang and I. Elishakoff, Optimization and
anti-optimization of forces in tensegrity structures, Proc. IASS
Symposium 2008, Int. Assoc. for Shell and Spatial Struct.,
Acapulco, Mexico, 2008.
-
J. Y. Zhang and M. Ohsaki, Numerical form-finding method for
tensegrity tower, Proc. IASS Symposium 2008, Int. Assoc. for Shell
and Spatial Struct., Acapulco, Mexico, 2008.
-
M. Ohsaki, K. Kasai, T. Hikino and Y. Matsuoka, Overview of 2007
E-Defense blind analysis contest results, Proc. 14th World
Conf. on Earthquake Eng., Beijing, S17-03-004, 2008.
-
P. Pan, M. Ohsaki and J. Y. Zhang, Collapse analysis of 4-story
steel moment resisting frames, Proc. 14th World Conf. on
Earthquake Eng., Beijing, Paper No. 05-01-003, 2008.
-
M. Ohsaki, K. Kasai, M. Yamamoto and S. Kiriyama, 2-D analysis
methods for 2007 blind analysis contest, Proc. 14th World Conf. on
Earthquake Eng., Beijing, Beijing, S17-03-005, 2008.
-
M. Ohsaki, K. Kasai, G. Thiagarajan, Y.-S. Yang and Y. Komiya,
3-D analysis methods for 2007 blind analysis contest, Proc. 14th
World Conf. on Earthquake Eng., Beijing, Beijing, S17-03-007, 2008.
-
J. Y. Zhang, M. Ohsaki and A. Uchida, Equivalent static loads for
nonlinear seismic design of spatial structures, Proc. 14th
World Conf. on Earthquake Eng., Beijing, Paper No. 05-01-0110, 2008.
-
T. Ine, M. Hori, H. Noguchi, M. Ohsaki, T. Miyamura, K. Oguni,
M. Kohiyama, K. Kajiwara and H. Akiba, Development of extremely
large-scale analysis software (E-Simulator: virtual shaking table)
for earthquake dynamic collapse analysis of structures, Proc. 14th
World Conf. on Earthquake Eng., Beijing, Paper No. 05-01-0169, 2008.
-
K. Ikeda, M. Ohsaki, K. Sudo and T. Kitada, Probabilistic analysis of
buckling loads of structures via extended Koiter law,
Proc. 4th Int. Conf. on Advances in Struct. Eng. and Mech. (ASEM08),
2008.
-
M. Ohsaki, Local search for multiobjective optimization of steel
frames, Proc. 5th China-Japan-Korea Joint Symposium on Optimization
of Structural and Mechanical Systems (CJK-OSM5), Jeju, Korea, 2008.
-
T. Kinoshita and M. Ohsaki, Topology synthesis of bistable compliant
mechanisms using truss elements, Proc. 5th China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM5), Jeju, Korea, 2008.
-
T. Hagishita and M. Ohsaki, Integrated approach of heuristics and
non-linear programming for topology optimization under stress
constraints, Proc. 5th China-Japan-Korea Joint Symposium on Optimization
of Structural and Mechanical Systems (CJK-OSM5), Jeju, Korea, 2008.
-
J. Y. Zhang and M. Ohsaki, Topology and shape of tensegrity
structures, 6th Int. Conf. on Computation of Shell and
Spatial Structures, Ithaca, IASS-IACM, 2008.
-
M. Ohsaki and R. Watada, linear mixed integer programming for
topology optimization of trusses and plates, 6th
Int. Conf. on Computation of Shell and Spatial Structures, Ithaca,
IASS-IACM, 2008.
-
M. Ohsaki, K. Kasai, Y. Matsuoka and J. Y. Zhang, Results of recent
E-Defence tests on full-scale steel building: Part 2 -- Collapse
simulation and blind analysis contest, Structures Congress 2008,
ASCE, Vancouver, 2008.
-
T. Miyamura, Y. Kanno and M. Ohsaki, Combination of interior-point
method and semismooth Newton method for solving frictionless contact
problems, Proc. APCOM'07 -- EPMESC XI, Kyoto, Japan, 2007.
-
P. Pan, H. Tomofuji, T. Wang, M. Nakashima, M. Ohsaki and
K. M. Mosalam, Design and implementation of peer-to-peer (P2P)
internet online hybrid test system, Proc. 2nd Int. Conf. Advances in
Experimental Structural Engineering, Shanghai, China, Vol. 1, pp. 255-261.2007.
-
J. Y. Zhang and M. Ohsaki, Optimization approach to force
identification of prestresses pin-jointed structures, Structural
Architecture -- Towards the Future Looking to the Past,
Proc. IASS 2007, Venice, Italy, Int. Assoc. Shell and Spatial
Struct., Paper No. 182, pp. 393-394, 2007.
-
J. Y. Zhang and M. Ohsaki, Optimization methods for force and shape
design of tensegrity structures, Proc. 7th World Congress of
Structural and Multidisciplinary Optimization (WCSMO7), Seoul,
pp. 40-49, 2007.
-
T. Hagishita and M. Ohsaki, Optimization of placement of braces for
a frame with semi-rigid joints by scatter dearch, Proc. 7th
World Congress of Structural and Multidisciplinary Optimization
(WCSMO7), Seoul, pp. 692-701, 2007.
-
N. Katoh, M. Ohsaki, T. Kinoshita, S. Tanigawa, D. Avis and
I. Steinu, Enumeration of optimal pin-jointed bistable compliant
mechanism, Proc. 7th World Congress of Structural and
Multidisciplinary Optimization (WCSMO7), Seoul, pp. 1041-1050,
2007.
-
Y. Kanno and M. Ohsaki, Maximization of minimal eigenvalue of
structures by using sequential semidefinite programming,
Proc. 7th World Congress of Structural and Multidisciplinary
Optimization (WCSMO7), Seoul, pp. 1121-1130, 2007.
-
M. Ohsaki and S. Nishiwaki, Generation of link mechanism by
shape-topology optimization of trusses considering geometrical
nonlinearity, Proc. 7th World Congress of
Structural and Multidisciplinary Optimization (WCSMO7), Seoul,
pp. 1834-1842, 2007.
-
M. Tada, M. Ohsaki, S. Yamada, S. Motoyui and K. Kasai, E-Defence
tests on full-scale steel buildings: Part 3 -- Analytical simulation
of collapse, Structures Congress 2007, ASCE, Long Beach, 2007.
-
N. Katoh, M. Ohsaki, T. Kinoshita, S. Tanigawa, D. Avis and
I. Streinu, Enumeration of optimal pin-jointed bistable compliant
mechanisms, Proc. Fourth China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM4), Kunming, China, pp. 65-70, 2006.
-
M. Ohsaki and P. Pan, Shape optimization of H-beam flange for
maximum plastic energy dissipation, Proc. Fourth China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM4), Kunming, China, pp. 443-448, 2006.
-
J. Y. Zhang and M. Ohsaki, Multiobjective optimization for force
design of tensegrity structures, Proc. Fourth China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM4), Kunming, China, pp. 485-490, 2006.
-
P. Pan, H. Tomofuji, T. Wang, M. Nakashima, M. Ohsaki and K. M. Mosalam,
Development of peer-to-peer (P2P) internet online hybrid test
system, Proc. 10th East Asia-Pacific Conference on
Structural Engineering and Construction (EASEC10), 2006.
-
S. Furusaka, M. Ohsaki, K. Harada, S. Arai, M. Yokose,
T. Kaneta, H. Kashii, K. Nakazono and N. Katoh,
Development of a risk management system for the project life cycle
of super-highrise residence, Proc. 23rd Int. Symposium on Robotics
and Automation on Construction (ISARC2006), 2006.
-
P. Pan and M. Ohsaki, Nonlinear multimodal pushover analysis method
for spatial structures, IASS-APCS 2006, Beijing, China,
Int. Assoc. Shell and Spatial Struct., 2006.
-
J. Fujiwara, S. Segawa, K. Oda, F. Fujii, M. Ohsaki and H. Noguchi,
Static loading tests and a computational mode of a flexible net,
IASS-APCS 2006, Beijing, China, Int. Assoc. Shell and Spatial
Struct., 2006.
-
M. Ohsaki and K. Ikeda, Imperfection sensitivity of arch-type
trusses with simultaneous snapthrough and member buckling,
IASS-APCS 2006, Beijing, China, Int. Assoc. Shell and Spatial
Struct., 2006.
-
J. Y. Zhang, S. Guest and M. Ohsaki, Symmetric prismatic tensegrity
structures, IASS-APCS 2006, Beijing, China, Int. Assoc. Shell and
Spatial Struct., 2006.
-
D. Avis, N. Katoh, M. Ohsaki, I. Streinu and S. Tanigawa,
Enumerating non-crossing minimally rigid frameworks,
Proc. 9th Japan-Korea Joint Workshop on Algorithms and
Computation, pages 73-78, 2006.
-
D. Avis, N. Katoh, M. Ohsaki, I. Streinu and S. Tanigawa,
Enumerating non-crossing minimally rigid frameworks,
Proc. 12th Annual Int. Computing and Combinatorics Conf.
(COCOON 2006), Lecture Notes in Computer Science,
4112, pages 205-215, Springer, 2006
-
D. Avis, 加藤直樹, 大崎 純, I. Streinu, 谷川眞一, 制約付き静定グラフ
列挙アルゴリズム, 情報処理学会研究報告, AL-108-5, pp33-40, 2006
-
M. Ohsaki, T. Kinoshita and P. Pan, Heuristic approaches to
performance-based design of steel frames with standard sections,
Proc. Behavior of Steel Structures in Seismic Areas, STESSA 2006,
Yokohama, Taylor \& Francis, pp. 67-72, 2006.
-
P. Pan, M. Ohsaki and T. Kinoshita, Constraint approach to
performance-based design of steel moment-resisting frames,
Proc. Behavior of Steel Structures in Seismic Areas, STESSA 2006,
Yokohama, Taylor \& Francis, pp. 73-78, 2006.
-
M. Ohsaki, Local and global searches of approximate optimal designs
of regular frames, III European Conference on Computational
Mechanics (ECCM 2006), lisbon, Paper No. 1174, 2006.
-
S. Furusaka, T. Kaneta, M. Ohsaki, K. Harada, Y. Orita, S. Arai and
N. Katoh, Quantitative analysis for the risk management of a
super-highrise residence, Proc. 1st Int. Conf. on Construct. Eng. and
Management, ICCM 2005, Seoul, Korea, Paper S3-B1, 2005.
-
J-Y. Zhang and M. Ohsaki, Form-finding of self-stressed structures
by an extended force density method, Proc. IASS Symposium 2005,
Bucharest, Romania, Int. Assoc. Shell and Spatial Struct.,
pp. 93--100, 2005.
-
M. Ohsaki, J-Y. Zhang and S. Kimura, An optimization approach to
design of geometry and forces of tensegrities, Proc. IASS Symposium 2005,
Bucharest, Romania, Int. Assoc. Shell and Spatial Struct.,
pp. 603--610, 2005.
-
Y-F. Xu, W-Q. Dai, N. Katoh and M. Ohsaki, Triangulating a convex
polygon with small number of non-standard bars, Proc. 11th
Annual Int. Conf, COCOON 2005, Lecture Notes in Computer Science,
3595, Springer, 2005.
-
T. Wang, P. Pan, H. Tomofuji, M. Ohsaki and M. Nakashima, Substructure
online test combined with general-purpose finite element program,
Proc. 1st Int. Conf. on Advances in Experimental Struct. Eng.,
AESE 2005, Nagoya, pp. 243-250, 2005.
-
M. Ohsaki and N. Katoh, Topology optimization of trusses with stress
and local constraints, Proc. 5th Int. Conf. on Computation of
Shell and Spatial Structures, Salzburg, IASS-IACM, 2005.
-
N. Katoh, M. Ohsaki and Y. Xu, A uniform triangle mesh generation of
curved surfaces, Proc. Third China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM3), Kanazawa, Japan, pp. 759-764, 2004.
-
J. Zhang, M. Ohsaki and Y. Araki, Optimal measurement positions for
identifying stress distribution of membrane structures using cable
net approximation, Proc. Third China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM3), Kanazawa, Japan, pp. 547-552, 2004.
-
M. Ohsaki and S. Nishiwaki, Shape design of bistable compliant
mechanisms by utilizong snapthrough behavior,
Proc. Third China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM3), Kanazawa, Japan, pp. 359-364, 2004.
-
T. Ogawa, M. Ohsaki, T. Miyamura, M. Nakayama and Y. Sasaki, Shape
optimization of shell roofs subjected to strong wind by using a
variable complexity model, Proc. Third China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM3), Kanazawa, Japan, pp. 185-190, 2004.
-
M. Ohsaki, Optimum design of trusses for specified seismic responses
considering stiffness of supporting structure,
Proc. Int. Symp. on Network and Center-Based Research for Smart
Structures Technologies and Earthquake Engineering (SE'04),
pp. 513-518, 2004.
-
H. Tagawa, T. Kondo and M. Ohsaki, Optimization of space trusses
considering spatial variation of input ground motions,
Proc. Int. Symp. on Network and Center-Based Research for Smart
Structures Technologies and Earthquake Engineering (SE'04),
pp. 507-512, 2004.
-
M. Ohsaki and Y. Kanno, Form-finding of cable domes with specified stresses
by using nonlinear programming, Proc. IASS-APCS 2003, Taipei, Taiwan, Int.
Assoc. Shell and Spatial Struct., 2003.
-
K. Uetani, M. Ohsaki and J. Fujiwara, A simple viscoelastic material model
and cutting pattern optimization for membrane structures, E. Onate and
Bo. Kr"oplin (Eds.), Textile Composites and Inflatable Structures,
Int. Center for Num. Meth. Engng. (CIMNE), Barcelona, pp. 113-118, 2003.
-
Y. Kanno and M. Ohsaki, Second-order cone programming for contact
analysis of cable networks, Proc. 5th World
Congress of Structural and Multidisciplinary Optimization (WCSMO5),
Paper No. 116, 2003.
-
M. Ohsaki, Sensitivity analysis of optimized structures with
hill-top branching, Proc. 5th World
Congress of Structural and Multidisciplinary Optimization (WCSMO5),
Paper No. 128, 2003.
-
J. Takagi and M. Ohsaki, Optimum design of lateral braces of columns
under buckling constraints considering critical imperfection,
Proc. 5th World Congress of Structural and Multidisciplinary
Optimization (WCSMO5), Paper No. 120, 2003.
-
M. Ohsaki, Critical minor imperfection corresponding to stable
bifurcation, Proc. 2nd International Conference on Structural
Stability and Dynamics (ICSSD2), pp. 496-501, 2002.
-
T. Ogawa, M. Ohsaki, Y. Nishikawa and R. Tateishi, Mechanical
properties of two-way grid shells optimized considering roundness
and elastic stiffness, Proc. Second China-Japan-Korea Joint
Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM2), Busan, Korea, pp. 201-206, 2002.
-
N. Katoh and M. Ohsaki, A relaxation method for topology
optimization of trusses under stress and local constraints,
Proc. Second China-Japan-Korea Joint Symposium on Optimization of
Structural and Mechanical Systems (CJK-OSM2), Busan, Korea,
pp. 165-170, 2002.
-
Y. Kanno and M. Ohsaki, Second-order cone programming for
complementary energy principle of cable networks, Proc. Second
China-Japan-Korea Joint Symposium on Optimization of Structural and
Mechanical Systems (CJK-OSM2), Busan, Korea, pp. 695-700, 2002.
-
J. Fujiwara and M. Ohsaki, Developability conditions and prestress
optimization for prestress optimization for prestressed curved
surfaces, Proc. Second China-Japan-Korea Joint Symposium on
Optimization of Structural and Mechanical Systems (CJK-OSM2), Busan,
Korea, pp. 195-200, 2002.
-
M. Ohsaki, Optimum design of geometrically nonlinear structures
with degenerate critical points, Proc. Second China-Japan-Korea
Joint Symposium on Optimization of Structural and Mechanical Systems
(CJK-OSM2), Busan, Korea, pp. 99-104, 2002.
-
J. Fujiwara and M. Ohsaki, Retensioning optimization of membrane
structures considering static and dynamic stiffness properties,
Proc. Fifth International Conference on Space Structures, Surrey,
UK, G. Parke and P. Disney (eds.), Thomas Telford, London,
pp. 1089-1098, 2002.
-
T. Ogawa, M. Ohsaki, R. Tateishi and T. Kumagai, Shape optimization
of single-layer latticed shells for maximum linear buckling loads,
Proc. Fifth International Conference on Space Structures, Surrey,
UK, G. Parke and P. Disney (eds.), Thomas Telford, London,
pp. 1345-1354, 2002.
-
Y. Kanno and M. Ohsaki, Second-order cone programming for shape
analysis and form finding of cable networks,
Proc. Fifth International Conference on Space Structures, Surrey,
UK, G. Parke and P. Disney (eds.), Thomas Telford, London,
pp. 567-576, 2002.
-
M. Ohsaki, T. Ogawa and R. Tateishi, Multiobjective shape
optimization of shells considering roundness and elastic stiffness,
Proc. Fifth International Conference on Space Structures, Surrey,
UK, G. Parke and P. Disney (eds.), Thomas Telford, London,
pp. 377-385, 2002.
-
Y. Kanno, M. Ohsaki and N. Katoh, Symmetry of the solution of
semidefinite program by using primal-dual interior-point method,
Proc. Fourth World Congress of Structural and Multidiaciplinary
Optimization (WCSMO4), Dalian, China, Paper No. 20, 2001.
-
M. Ohsaki and Y. Kanno, Optimum design of finite dimensional systems
with coincident critical points, Proc. Fourth World Congress of
Structural and Multidiaciplinary Optimization (WCSMO4), Dalian, China,
Paper No. 21, 2001.
-
M. Ohsaki, Parametric sensitivity of optimal arch-type frames
subjected to spatially varying seismic motions,
Theory, Design and Realization of Shell and Spatial Structures,
Proc. IASS Symposium 2001, Nagoya, Japan, Int. Assoc. Shell and
Spatial Struct., Paper No. TP124, 2001.
-
T. Mizutani, J. Fujiwara, M. Ohsaki, T. Kitaori and O. Hosozawa,
Pretension optimization of cable-supported spatial frames,
Theory, Design and Realization of Shell and Spatial Structures,
Proc. IASS Symposium 2001, Nagoya, Japan, Int. Assoc. Shell and
Spatial Struct., Paper No. TP053, 2001.
-
Y. Kanno and M. Ohsaki, Large deflection analysis of cable networks
by second-order cone program,
Theory, Design and Realization of Shell and Spatial Structures,
Proc. IASS Symposium 2001, Nagoya, Japan, Int. Assoc. Shell and
Spatial Struct., Paper No. TP052, 2001.
-
J. Fujiwara, M. Ohsaki and K. Uetani, Cutting pattern design of
membrane structures considering viscoelasticity of material,
Theory, Design and Realization of Shell and Spatial Structures,
Proc. IASS Symposium 2001, Nagoya, Japan, Int. Assoc. Shell and
Spatial Struct., Paper No. TP047, 2001.
-
Y. Kanno, M. Ohsaki, K. Fujisawa and N. Katoh, Topology optimization
for specified multiple linear buckling load factors by using
semidefinite programming, Proc. 1st Int. Conf. on Struct.
Stability and Dynamics (ICSSD 2000), pp. 267-272, 2000.
-
M. Ohsaki, J. Fujiwara, T. Kitaori, T. Mizutani and O. Hosozawa,
Optimization of pretensioning process of a cable-stayed frame by
inverse construction analysis, Proc. 6th Asian Pacific Conf. on
Shell and Spatial Struct (APCS 2000), Vol. 2, pp. 711-718, 2000.
-
F. Aurenhammer, N. Katoh, H. Kojima, M. Ohsaki and Y-F. Xu,
Approximating uniform triangular meshes in polygons, Proc. 6th
Annual Int. Conf, COCOON 2000, Lecture Notes in Computer Science,
1858, Springer, 2000.
- K. Uetani, E. Mitsuda and M. Ohsaki, Cutting-pattern optimization of membrane
structures by parametric approach with respect to boundary shapes, Proc.
4th Int. Colloquim on Computation on Shell & Spatial Struct. (IASS-IACM
2000), 2000.
-
M. Ohsaki, Y. Nagano and K. Wakamatsu, A two-level optimization
method for seismic design of elastic three-dimensional frames,
Proc. 12th World Confefence on Earthquake Engineering,
Auckland, New Zealand, Paper \#0686, 2000.
-
M. Tsuji, Y. Nagano, M. Ohsaki and K. Uetani, Optimum design method
for high-rise building frame with viscous dampers,
Proc. 12th World Confefence on Earthquake Engineering,
Auckland, New Zealand, Paper \#0754, 2000.
-
H. Tagawa and M. Ohsaki, A continuous topology transition model for
shape optimization of plane trusses with uniform cross-sectional
area, Proc. 3rd World Congress of Structural and
Multidisciplinary Optimization (WCSMO3), 1999.
-
K. Fujisawa, Y. Kanno, M. Ohsaki and N. Katoh, Semi-definite
programming for topology optimization of trusses under multiple
eigenvalue constraints, Proc. 3rd World Congress of
Structural and Multidisciplinary Optimization (WCSMO3), 1999.
-
M. Ohsaki and J. Fujiwara, An inverse method for cutting pattern
optimization of membrane structures considering material
nonlinearity, Proc. 40th Anniversary Congress of the Int. Assoc. for
Shells and Spatial Struct., Madrid, B3.23-30, 1999.
-
N. Katoh, M. Ohsaki and Y-F. Xu, An approximation algorithm for
finding a uniform triangular mesh, Proc. Korea-Japan Joint Workshop
on Algorithms and Computation, pp. 139-146, 1999.
-
M. Ohsaki and Y. Kato, Simultaneous optimization of topology and
nodal locations of a plane truss associated with a B'ezier curve,
Structural Engineering in the 21st Century, Proc. Structures
Congress, ASCE, pp. 582-585, 1999.
-
M. Ohsaki, N. Katoh and Y. Isshiki, Interactive multiobjective
two-level optimization of dissatisfaction level of structures,
Proc. Seventh AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary
Analysis and Optimization, AIAA, pp. 97-106, 1998.
-
大崎 純, 遺伝的アルゴリズムと確率モデルによる施設配置最適化,第20回
情報システム利用技術シンポジウム, pp. 409-414, 1997.
- K. Uetani, E. Fujii and M. Ohsaki, Initial stress field determination of
membranes using optimization technique, Y-B. Yang (Ed.), Proc. Int. Colloquim
on Computation of Shell & Spatial Struct., Taipei, pp. 301-306, 1997.
- M. Ohsaki, K. Uetani and M. Takeuchi, Optimum design of symmetric trusses
for specified maximum load factor, Y-B. Yang (Ed.), Proc. Int. Colloquim
on Computation of Shell & Spatial Struct., Taipei, pp. 295-300, 1997.
-
M. Ohsaki and H. Tagawa, Genetic algorithm for simultaneous
optimization of topology and geometry of a regular plane truss,
Proc. Int. Symposium on Optimization and Innovative Design (OPID97),
Japan Soc. of Mech. Engineers, Paper #121, 1997.
-
M. Ohsaki, Sensitivity analysis of elastoplastic structures by using
explicit integration method, Applied Mechanics in the Americas,
Proc. 5th Pan American Congress of Applied Mechanics, Vol. 5, The
University of Iowa, Iowa City, IA, pp. 304-306, 1997.
-
大崎 純, 田川 浩, 遺伝的アルゴリズムを用いた規則的平面トラスのトポロ
ジー・節点位置同時最適化法, 第19回情報システム利用技術シンポジウム,
pp. 295-300, 1996.
-
M. Ohsaki and T. Nakamura, Optimum design of geometrically
nonlinear trusses via stress constrained design, WCSMO-1,
Proc. First World Congress of Structural and Multidisciplinary
Optimization, pp. 459-464, 1995.
-
T. Nakamura and M. Ohsaki, Earthquake-strain constrained
design for large space frames, Space Structures 4, Proc. 4th
Int. Conf. on Space Structures, Surrey, UK, G. Parke and C. Howard
(eds.), Thomas Telford, London, pp. 479-506, 1993.
-
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メールアドレス:ohsaki@archi.kyoto-u.ac.jp