Characteristic of crack tip fields for dynamic fracture in anisotropic materials

被引：4
|
作者：
Gao Xin [1 ]
Hou Li-an [1 ]
Wang Han-gong [1 ]
Kang Xing-wu [1 ,2 ]
机构：
[1] Xian High Tech Inst, Sect 501, Xian 710025, Peoples R China
[2] Xi An Jiao Tong Univ, MOE Key Lab Strength & Vibrat, Xian 710049, Peoples R China
来源：
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS | 2013年 / 37卷
关键词：
Fracture dynamics; Crack tip; Stress fields; Displacement fields; Anisotropy; STRESS INTENSITY FACTORS; PROPAGATION CHARACTERISTICS; ORTHOTROPIC MATERIAL; EXTENSION;
D O I：
10.1016/j.euromechsol.2012.05.004
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The constant length crack steadily propagating in an anisotropic body, acted on at infinity by uniform biaxial and shear loading, is investigated. The analytical solutions to the dynamic crack tip stress fields and displacement fields are derived. The obtained crack tip fields contain second order term, and are unified and applicable to the analysis of the crack tip fields of anisotropic material, orthotropic material and isotropic material under dynamic or static load. Crack propagation characteristics are represented by crack propagation velocity M and fiber direction alpha. The faster the crack velocity is, the greater the dynamic stress components and dynamic displacement components around crack tip is. Distributions of the stress fields and displacement fields vary with M and alpha but the inclinations of stress and displacement distribution are almost the same. The effects of biaxial loading coefficient on crack tip fields are also considered. (C) 2012 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：122 / 131
页数：10
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