ONE-DIMENSIONAL PROPAGATION SPEED OF AN ELASTIC-PLASTIC VISCOPLASTIC STRESS WAVE

被引：3
|
作者：
TANIMOTO, N
机构：
[1] Department of Mechanical Engineering, Ube National College of Technology, Ube-shi, Yamaguchi-ken, 755, Tokiwadai
来源：
NUCLEAR ENGINEERING AND DESIGN | 1994年 / 150卷 / 2-3期
关键词：
Stress analysis;
D O I：
10.1016/0029-5493(94)90144-9
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A one-dimensional elastic-plastic-viscoplastic constitutive equation with the introduction of overstress and understress is proposed, and the propagation speed of an elastic-plastic-viscoplastic stress wave is derived using this equation. Employing the propagation theory of this wave, the strain-rate dependence of the stress, a quasi-static stress-strain curve, the high-strain-rate dependence of the stress, and the strain and strain-rate dependence of the speed can be expressed. It is also shown that the extent of the strain-rate dependence of the stress and the speed can be expressed by changing the viscoplastic coefficient eta and the modulus k2 in the elastic-plastic-viscoplastic constitutive equation and in the equation of the elastic-plastic-viscoplastic stress wave.
引用
收藏
页码：275 / 280
页数：6
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