正交各向异性材料粘塑性统一本构模型

周柏卓; 张晓霞; 罗焰明

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正交各向异性材料粘塑性统一本构模型
周柏卓,张晓霞,罗焰明

作者	单位
周柏卓	School of Mechanical Engineering,Northeastern Univ ,Shenyang,110006
张晓霞	School of Mechanical Engineering,Northeastern Univ ,Shenyang,110006
罗焰明	School of Mechanical Engineering,Northeastern Univ ,Shenyang,110006

摘要:

通过引入各向异性矩阵，将各向同性材料的ＷＡＬＫＥＲ粘塑性统一本构模型进行了修正，提出了一个正交各向异性材料的粘塑性统一本构模型，给出了定向结晶材料和单晶材料各向异性矩阵的表达式。用所提出的统一本构模型预测了某单晶材料不同方向的迟滞回线、蠕变和松弛特性，同时与试验结果进行了比较。

关键词: 非弹性应力应变率正交各向异性材料粘塑性数值仿真

DOI：

分类号:V250.1

基金项目:

A UNIFIED VISCOPLASTIC CONSTITUTIVE MODEL OF ORTHOGONAL ANISOTROPIC MATERIAL

Zhou Bozhuo¹, Zhang Xiaoxia¹, Luo yanming¹

School of Mechanical Engineering,Northeastern Univ ,Shenyang,110006

Abstract:

Besed on modification of Walker′s model of isotropic material by introducing anisotropic matrix,a unified viscoplastic constitutive model of orthogonal anisotropic material is presented The anisotropic matrix of directionally crystallized material and single crystal material is given The hysteresis,creep and relaxation behavior are predicted and compared with experimental data

Key words: Inelastic stress Strain rate Orthogonal anisotropic material + Viscoplasticity Numerical simulation