A NEW DAMAGE MODEL FOR MICROCRACK-WEAKENED BRITTLE SOLIDS

被引：9
|
作者：
冯西桥 [1 ]
余寿文 [1 ]
机构：
[1] Department of Engineering Mechanics, Tsinghua University, Beijing, China 100084
来源：
Acta Mechanica Sinica | 1993年 / 03期
基金：
中国国家自然科学基金;
关键词：
damage model; brittle material; constitutive relation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In the present paper, a micromechanically based damage model formicrocrack-weakened solids is developed. The concept of the domain of microcrackgrowth (DMG) is defined and used to describe the damage state and the anisotropicproperties of brittle materials. After choosing an appropriate fracture criterion ofmicrocrack, we obtain the analytical expression of DMG under a monotonically in-creasing proportional plane stress. Under a complex loading path, the evolutionequation of DMG and the overall effective compliance tensor of damaged materialsare given.
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页码：251 / 260
页数：10
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