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Quadrilateral isoparametric finite elements for plane elastic Cosserat bodies*
摘    要:

关 键 词:四边形  等参有限元分析  Cosserat模型  多相矩阵  压力集中
收稿时间:9 April 2004
修稿时间:31 March 2005

Quadrilateral isoparametric finite elements for plane elastic Cosserat bodies
Authors:Email author" target="_blank">Hongwu?ZhangEmail author  Hui?Wang  Guozhen?Liu
Institution:(1) State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China;(2) Xinglongtai Oil Extraction Plant, Liaohe Oil Field, Panjin, 124000, China
Abstract:4-node, 8-node and 8(4)-node quadrilateral plane isoparametric elements are used for the solution of boundary value problems in linear isotropic Cosserat elasticity. The patch test is applied to validate the finite elements. Engineering problems of stress concentration around a circular hole in plane strain condition and mechanical behaviors of heterogeneous materials with rigid inclusions and pores are computed to test the accuracy and capability of these three types of finite elements.The project supported by the National Natural Science Foundation of China (10225212, 50178016, 10421002) and the Program for Changjiang Scholars and Innovative Research Team in University of China The English text was polished by Keren Wang.
Keywords:Cosserat model  Isoparametric elements  Patch test  Heterogeneous materials
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