An Interacting Micro-Cracks Damage Constitutive Model for Alumina Ceramics under Uniaxial Compression

被引：0
|
作者：
Ning, Jian-Guo [1 ]
Fang, Min-Jie [1 ]
Ren, Hui-Lan [1 ]
机构：
[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
来源：
INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION | 2010年 / 11卷
基金：
中国国家自然科学基金;
关键词：
Alumina; dynamic; damage; wing crack arrays; BEHAVIOR;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Westergaard stress function is used to estimate the influence of interaction on the stress intensity factor. A damage constitutive model, in which damage parameter is related to the initial crack length, tensile crack length, and crack spacing, is developed for alumina under uniaxial compressive loadings. The crack nucleation parameters are discussed together with the crack spacing and initial crack length in the damage constitutive model on the dynamic fracture toughness. The modeling stress-strain curve shows good agreement with experimental results.
引用
收藏
页码：183 / 188
页数：6
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