摘要
基于传统的刚塑性有限元体积可压缩法中一直忽视了等效应变速率ε的矩阵表达式可进一步简化，本文运用矩阵运算方法简化了等效应变速率的矩阵表达式。并结合刚塑性可压缩材料的变分原理。
Based on the complicated matrix form of the effective strainrate·existing in slightly compressible method of rigidplastic FEM, we simplified the matrix expression of ·by using matrix calculating method and recommended the corresponding calculating formulae for the new simplified slightly compressible method of rigidplastic FEM by applying the variational principle of rigid-plastic slightly compressible material in this paper. Compared with the calculating formulae for the slightly compressible method of rigidplastic FEM, the new simplified calculating form has apparent advantages of the simple globe stiffness matrix equations, simple to calculate and easy to programming.
出处
《应用力学学报》
CAS
CSCD
北大核心
1997年第4期134-137,共4页
Chinese Journal of Applied Mechanics
关键词
刚塑性
有限元
可压缩材料
基本方程
塑性力学
: slightly compressible material, rigid-plastic, finite element method.
