Micro and macro anisotropic cyclic damage-plasticity models for MMCS

被引：24
|
作者：
Voyiadjis, GZ
Thiagarajan, G
机构：
来源：
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | 1997年 / 35卷 / 05期
关键词：
D O I：
10.1016/S0020-7225(96)00125-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two approaches to modeling the cyclic damage-plasticity behavior of metal matrix composites are presented in this paper, namely. a micro (micromechanical-damage) and a macro (continuum-damage) based approach. Each of these approaches involves a fictitious undamaged 'effective' configuration to which the plasticity equations are applied and constitutive equations derived. Using the equations for the transformation of stress from the undamaged to the damaged configuration, the transformation of these equations to the actual damaged configuration is performed. Two new concepts are introduced here: (i) the incorporation of a term Y, similar to backstress, in the thermodynamic force Y space in the cyclic damage criterion, and (ii) the concept of cyclic damage under cyclic loading situations. This paper outlines the results from the two models in comparison with experimental results and compares and contrasts the effectiveness of the two models. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：467 / 484
页数：18
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