Moment-to-force ratios of closing loops during deactivation 2004
サイマルコントロール法による膨張曲面の形態解析 2002
A Study on Geometrically and Materially non-linear Analysis of Space Frame Structures 2002
Folding analysis of reversal arch by the tangent stiffness method 2001
A Study on preventing the fall of slew and curved bridge decks by using rubber bearings 2001
A Computational and experimental study on seismic response of skew and curved decks pounding with abutments 2001
ゴム支承支持された中小規模斜桁・曲線桁の地震時衝突応答と落橋防止 2000
Advances in Computational Engineering and Sciences 2000
A Strict Compatibility in 3-D Large Deformational Analysis for Shell and/or Frame Structures 2000
A Study on Multibifurcation performance of a steeple type arch 2000
多角形リングのたたみ込み手法に関する研究 1999
Equilibrium form by geometrical stiffness control 1999
Seismic Response with Collision of Skew Bridge and Curved One Supported by Rubber Bearing 1999
Folding analysis of reversal arch by the tangent stiffness method 1999
接線剛性法による薄板構造の大変形挙動解析 1998/07
Application of the tangent stiffness method to 3-D structures using polyhedral elements, 1997
Large deformation analysis of spatial folding by the tangent stiffness method 1997
Formfinding of single layer structure by measure potential function of element 1997
石鹸膜有限要素構造を先行状態とする膜構造初期形状決定に関する考察 1996
An interactive program for the analyses of membrane structure 1996
Equilibrium analysis of plane frame structures by the tangent stiffness method 1995
Stable forms of single layer latticed dome and its geometrically nonlinear analysis 1995
等張力曲面解析における接線幾何剛性 1994
石鹸膜四面体要素による等張力曲面解析 1994
Original Articles
Consistent Algorithm For Tensegrity From Form-Finding To Folding And Deployment Simulation With Common Scheme; 2021/09 ANNOUNCEMENT INFO.; X International Conference on Textile Composites and Inflatable Structures STRUCTURAL MEMBRANES 2021 AUTHOR; Cho Kyi Soe, S. Yamashita, E. Karasniqi, K. Ijima And H. Obiya
Tensegrity form-finding using measure potential and its influential coefficients on the solution; 2020/07 ANNOUNCEMENT INFO.; Proceedings of the International Conference on Computational Methods, Vol.7, pp.83-90 AUTHOR; Cho Kyi Soe^D, Shuhei Yamashita, Katsushi Ijima, and Hiroyuki Obiya
A Foundational Study on Rational Optimization of Damping Ratio for Accurate Dynamic Simulation with Ultra Large Displacement; 2024/08 ANNOUNCEMENT INFO.; INTERNATIONAL JOURNAL OF INTEGRATEDENGINEERING, Vol. 16, No. 4, 72-81 AUTHOR; Erjon Krasniqi, Ryuki Nagano, Muhammad Nizam bin Zakaria
Hiroyuki Obiya
A Foundational Study on Rational Optimization of Damping Ratio for Accurate Dynamic Simulation with Ultra Large Displacement; 2023/10 ANNOUNCEMENT INFO.; Proceedings of IConCEES2023 AUTHOR; Erjon Krasniqi, Ryuki Nagano, Muhammad Nizam bin Zakaria
Hiroyuki Obiya
Study on energy conservation in dynamic ultra-large deformation analysis of plane frame
structures; 2022/07 ANNOUNCEMENT INFO.; Proceedings of the International Conference on
Computational Methods, Vol. 9, 123-130 AUTHOR; Erjon Krasniqi, Shuhei Yamashita and Hiroyuki Obiya
A study on large deformation and large displacement analysis using hyper-elastic elements without compression; 2019/12 ANNOUNCEMENT INFO.; Journal of structures and materials in civil engineering, 35 AUTHOR; Cho Kyi Soe, Daiki Koga Shuhei Yamashita, Katsushi Ijima, Hiroyuki Obiya
Element Force Equation Using Multiple Non-stressed Length for Tensegrity Form-finding; 2019/10 ANNOUNCEMENT INFO.; Proceedings of the IASS Annual Symposium 2019 – Structural Membranes 2019 Form and Force, pp.1579-1586 AUTHOR; Cho Kyi SOE, Hiroyuki OBIYA, Katsushi IJIMA, Muhammad Nizam bin ZAKARIA
On the Accuracy of the Numerical Integrals of Newmark Method for Computing Inelastic Seismic Responses; 2019/09 ANNOUNCEMENT INFO.; Proceedings of COMPLAS 2019. AUTHOR; Nobuteru Yoshizaki, Katsushi Ijima, Hiroyuki Obiya and Nizam Z.M
Large displacement and deformation analyses for structures with hyper elastic
-materials using a non-linear element force equation; 2018/12 ANNOUNCEMENT INFO.; AUTHOR;
An accurate algorithm of numerical integration for computing seismic responses of inelastic structures; 2018/04 ANNOUNCEMENT INFO.; AUTHOR; M Miyahara, K Ijima, H Obiya and M Nizam
Potential function of element measurement for form-finding of wide sense tensegrity; 2018/04 ANNOUNCEMENT INFO.; IOP Conference Series: Earth and Environmental Science
140(1),012131 AUTHOR; Cho Kyi Soe, H Obiya, D Koga, M Nizam b Z and K Ijima
Mechanically rational forms of curved surface structures shaped from the uniform strain elements; 2018/04 ANNOUNCEMENT INFO.; International Journal of Integrated Engineering, 10(2), pp. 87-92 AUTHOR; K Tanaka, K Ijima, H Obiya and M Nizam
Mesh Optimization Based on A Process of Geometrical Nonlinear Analysis; 2018/04 ANNOUNCEMENT INFO.; IOP Conference Series: Earth and Environmental Science
140(1),012131 AUTHOR; Takuya Kawakami^M, H Obiya, Cho KyiSoe^M, M Nizam b Z and K Ijima
The evaluation of shear deformation for contact analysis with large displacement; 2018/04 ANNOUNCEMENT INFO.; Journal of Physics: Conference Series, Series995 012018 AUTHOR;
Mesh optimization using potential function of element measurement; 2017/12 ANNOUNCEMENT INFO.; AUTHOR;
An Orthotropic Membrane Model for the Large Deformation Analysis and Snapping Phenomena of the Dome Inflated; 2016/08 ANNOUNCEMENT INFO.; , 6 AUTHOR; Shohei Yamada, Katsushi Ijima, Hiroyuki Obiya and Muhammad Nizam Zakaria
A Numerical Case Study on Contact Analysis with Large Displacement; 2016/04 ANNOUNCEMENT INFO.; MATEC Web of Conferences, Volume 47, 7 AUTHOR; A. Yamasaki, H. Obiya, K. Ijima and Z. M. Nizam
A study on the components of the tangent geometric stiffness in the plane frames big displacement analysis; 2015/12 ANNOUNCEMENT INFO.; AUTHOR;
A Comparison for the Simulation of Frictionless Contact Problem with Large Displacement; 2015/07 ANNOUNCEMENT INFO.; Applied Mechanics and Materials, ISSN:1662-7482,Vols.773-774,pp.257-261 AUTHOR; Z.M.Nizam,H.Obiya,K.Ijima,A.T.S.Azhar
A SIMULATION OF CAT’S CRADLE BY GEOMETRICALLYNONLINEAR ANALYSIS WITH SLIDING NODES; 2014/07 ANNOUNCEMENT INFO.; AUTHOR; Hiroyuki Obiya, ^MMidori Murayama, Katsushi Ijima, Koji Ishibashi and ^D Muhammad Nizam Bin Zakaria
Effect of Shear Deformation on Convergability of Simple Contact Analysis with Large Displacement; 2013/12 ANNOUNCEMENT INFO.; APCOM & ISCM
11-14th December, 2013, Singapore AUTHOR; Z.M. Nizam, H. Obiya, K. Ijima, R. Tokubuchi, and K. Ishibashi
The robustness of Timoshenko beam in geometrically non-linear frame analysis; 2013/12 ANNOUNCEMENT INFO.; AUTHOR; Ryota Tokubuchi, Hiroyuki Obiya, Katsushi Ijima, Noriaki Kawasaki, Z.M.Nizam
Path Finding of Virtual Structure Composed Of Axial Force Line Elements; 2012/05 ANNOUNCEMENT INFO.; AUTHOR; Z. M. Nizam, A. Matsuo, H. Obiya and K. Ijima
Shape analysis for inflatable structures with water pressure by the simultaneous control; 2011/10 ANNOUNCEMENT INFO.; STRACTURAL MEMBRANES, Int.Conf,on Textile Composites and Inflatable Structures AUTHOR; MUHAMMAD NIZAM BIN ZAKARIA, HIROYUKI OBIYA AND KATSUSHI IJIMA
Form-finding of extensive tensegrity using truss elements and axial force lines; 2011/10 ANNOUNCEMENT INFO.; AUTHOR; Aya Matsuo, Hiroyuki Obiya Katsushi Ijima
Shape Analyses for Isotonic Surfaces with Soap Film Elements and Axial Lines; 2010 ANNOUNCEMENT INFO.; Proceedings of the International Association for Shell and Spatial Structures Symposium 2010, 1210-1221 AUTHOR; Hiroyuki Obiya, Yusheng Wu, Katsushi Ijima
A Method of Replacing Membrane Structures by Flexible Cable Elements and the Large Deformation Analysis; 2010 ANNOUNCEMENT INFO.; Proceedings of the International Association for Shell and Spatial Structures Symposium 2010, 2219-2228 AUTHOR; Kota.Kido, Katsushi Ijima, Hiroyuki Obiya, Noriaki Kawasaki
An algorithm for contact problem with large deformation of plane frame structures; 2009/04 ANNOUNCEMENT INFO.; AUTHOR; Takuya Tsutsui, Hiroyuki Obiya, Katsushi Ijima
Large displacement analysis of compression-free membrane structures modeled by elestic-catenary cables; 2009/03 ANNOUNCEMENT INFO.; , 55, A, 11-22 AUTHOR; Katsushi Ijima, Hiroyuki Obiya, Noriakl Kawasaki
Large Displacement Analysis of Sagged Nets in Three-Dimensional Space; 2007 ANNOUNCEMENT INFO.; Third Asian-Pacific Congress on Computational Mechanics in conjunction with Eleventh International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science(CD-ROM) AUTHOR; Tetsuaki Sato, Katsushi Ijima, Hiroyuki Obiya, Noriaki Kawasaki
A composite element of springs and rigid bars and its application to nonlinear frame analysis; 2007 ANNOUNCEMENT INFO.; Third Asian-Pacific Congress on Computational Mechanics in conjunction with Eleventh International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science(CD-ROM) AUTHOR; Katsushi Ijima, Hiroyuki Obiya, Makoto Kishimura, Yevgeniy Ostrikov
A Study on Multi-bifurcation Equilibrium Paths using the Tangent Stiffness Method; 2007 ANNOUNCEMENT INFO.; Third Asian-Pacific Congress on Computational Mechanics in conjunction with Eleventh International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science(CD-ROM) AUTHOR; Kouji Abe, Hiroyuki Obiya, Katsushi Ijima
Element coordinates and the utility in large displacement analysis of a space frame; 2004/01 ANNOUNCEMENT INFO.; Computer Modelingin Engineering , 4, 2, 283-248 AUTHOR; K..Iima, H.Obiya, S.Iguchi nd S.Goto
Form and Structural Analysis of High-Rise Pneumatic Structures; 2004 ANNOUNCEMENT INFO.; Proc. of the mt. Conf. on Computational & Experimental Engineering and Sciences (ICCEES 04), in CD-ROM, AUTHOR; H. Obiya, K. Ijima, N. Kawasaki, S. Iguchi
Moment-to-force ratios of closing loops during deactivation; 2004 ANNOUNCEMENT INFO.; Kieferorthopadie, 18, 3, 175-182 AUTHOR; Yoshida, N., Jost-Brinkmann, P.-G., Koga Y., Kobayashi, K, Obiya, H.,Peng, C-L.
A Study on Geometrically and Materially non-linear Analysis of Space Frame Structures; 2002 ANNOUNCEMENT INFO.; Proc.of 2nd Int. Conf. on Advances in Structural Engineering and Mechanics AUTHOR; Ijima,K.,Obiya,H.,Harada,T.,Iguchi,S
Folding analysis of reversal arch by the tangent stiffness method; 2001 ANNOUNCEMENT INFO.; Structural Engineering and Mechanics, An International Journal, 11, 2, 211-219 AUTHOR; Iguchi.S., Goto,S., Ijima,K., Obiya,H
A Study on preventing the fall of slew and curved bridge decks by using rubber bearings; 2001 ANNOUNCEMENT INFO.; Structural Engineering and Mechanics, 11, 2, 347-362 AUTHOR; Ijima,K., Obiya,H., Aramaki,G, Kawasaki,N.
A Computational and experimental study on seismic response of skew and curved decks pounding with abutments; 2001 ANNOUNCEMENT INFO.; Proc. Of the first Asian-Pacific Congress on Computational Mechanics, 1579-1584 AUTHOR; Ijima,K., Liengson,X., Obiya,H.
Advances in Computational Engineering and Sciences; 2000 ANNOUNCEMENT INFO.; TECH SCIENCE PRESS, 1, 831-836 AUTHOR; Ijima,K., Obiya,H., Iguchi,S, Goto,S
A Strict Compatibility in 3-D Large Deformational Analysis for Shell and/or Frame Structures; 2000 ANNOUNCEMENT INFO.; Advances in Computational Engineering and Sciences, 1, 843-848 AUTHOR; Obiya,H., Ijima,K.,Kawasaki,N
A Study on Multibifurcation performance of a steeple type arch; 2000 ANNOUNCEMENT INFO.; Advances in Computational Engineering and Sciences, 2, 1579-1584 AUTHOR; Iguchi.S., Goto,S., Ijima,K., Obiya,H
多角形リングのたたみ込み手法に関する研究; 1999 ANNOUNCEMENT INFO.; , 45, A, 311-319 AUTHOR;
Equilibrium form by geometrical stiffness control; 1999 ANNOUNCEMENT INFO.; Proc. of Advances in Structural Engineering and Mechanics, 1, 445-450 AUTHOR; Obiya,H., Ijima,K., Goto,S
Seismic Response with Collision of Skew Bridge and Curved One Supported by Rubber Bearing; 1999 ANNOUNCEMENT INFO.; Proc. of Advances in Structural Engineering and Mechanics, 1, 777-782 AUTHOR; Ijima,K., Obiya,H., Aramaki,G.
Folding analysis of reversal arch by the tangent stiffness method; 1999 ANNOUNCEMENT INFO.; Proc. Of APCOM’99, 375-380 AUTHOR; Iguchi.S., Goto,S., Ijima,K., Obiya,H
Application of the tangent stiffness method to 3-D structures using polyhedral elements,; 1997 ANNOUNCEMENT INFO.; Computing in civil and building engineering, 1, 63-68 AUTHOR; Obiya,H., Goto,S., Ijima,K., Iguchi,S.
Large deformation analysis of spatial folding by the tangent stiffness method; 1997 ANNOUNCEMENT INFO.; , 1, 249-256 AUTHOR; Iguchi,S, Goto,S., Ijima,K., Obiya,H.
Formfinding of single layer structure by measure potential function of element; 1997 ANNOUNCEMENT INFO.; Structural morphology, 249-256 AUTHOR; Ijima,K., Obiya,H.
An interactive program for the analyses of membrane structure; 1996 ANNOUNCEMENT INFO.; Research report on membrane structures '96, 109-116 AUTHOR; Xi,W., Goto,S., Obiya,H, Liu.L, Ijima,K.
Equilibrium analysis of plane frame structures by the tangent stiffness method; 1995 ANNOUNCEMENT INFO.; , 2, 305-312 AUTHOR; Obiya,H., Goto,S., Ijima,K., Koga,K.
Stable forms of single layer latticed dome and its geometrically nonlinear analysis; 1995 ANNOUNCEMENT INFO.; Stability of steel structures, 2, 67-74 AUTHOR; Ijima,K., Obiya,H., Goto,S., Medved,G
Large deformational analyses for cable/net structure with frictionless contact; 2013/12 ANNOUNCEMENT INFO.; AUTHOR; M. Murayama, H. Obiya, K. Ijima, N. Kawasaki