An expression of plastic anisotropy in large strain range

被引：0
|
作者：
Gotoh, M [1 ]
机构：
[1] Gifu Univ, Dept Mech & Syst Engn, Gifu 5011193, Japan
来源：
ENGINEERING PLASTICITY FROM MACROSCALE TO NANOSCALE PTS 1 AND 2 | 2003年 / 233-2卷
关键词：
anisotropic stress space; anisotropy; double quadratic-yield surface; large strain;
D O I：
10.4028/www.scientific.net/KEM.233-236.95
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present paper, an arbitrary yield surface, is composed of two contact ellipses, each of which expresses the loading side and the inverse side of the yield curve, respectively. For an initially anisotropic material, the anisotropic deviatoric stress space is introduced, instead of the conventional isotropic one. Anisotropy parameters involved, in the yield function change with deformation to express the history dependency of the material plasticity. Several examples of yield surface are demonstrated. Variation of r-value with deformation is also briefly discussed.
引用
收藏
页码：95 / 100
页数：6
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