著者

渡辺 浩志 久田 俊明 野口 裕久

出版者

一般社団法人日本機械学会

雑誌

日本機械学会論文集A編 (ISSN:03875008)

巻号頁・発行日

vol.59, no.557, pp.183-190, 1993

被引用文献数

4 1

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'Kinking' is known as an unstable behavior of a twisted slender rod, which occurs after the torsional buckling. It is simulated by a hyper-elastic finite element code developed by the authors, with hexahedral solid elements. The mechanical characteristics and the criterion of the kinking are successfully discussed. An incompressible constraint to model a rubber-like material is introduced in the simulation by the Lagrange multiplier method and the penalty method. It is found that the former method is computationally more efficient in the case of extremely large deformation such as kinking.

著者

土屋 皓介 野口 裕久

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

vol.2005, no.1, pp.17-18, 2005-09-18

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The objective of the present study is to investigate an accuracy of the mixed interpolation of tensorial components triangular shell element proposed by Lee and Bathe in 2004 in geometrically nonlinear problems. A large deformation analysis of a pinched cylinder subjected to a concentrated load is conducted and the performance of MITC3 element comparing with the one by MITC4 element is discussed.

著者

壺内 大輔 小木 哲朗 野口 裕久

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会技術研究報告. MVE, マルチメディア・仮想環境基礎 (ISSN:09135685)

巻号頁・発行日

vol.100, no.108, pp.3-7, 2000-06-06

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In this study, in order to realize real-time deformation analysis in environment of virtual reality, a new efficient time integration scheme for finite element method is proposed. The proposed method is called, iterative Newmark, method. In this method, it is not necessary to calculate the inverse of coefficient matrix as in the explicit time integration scheme and has a similar stability criterion to the conventional Newmark method. Several numerical examples validate the efficiency and moderate accuracy of the proposed method.