Finite-part integral and boundary element method for interaction between two parallel planar cracks in three-dimensional finite bodies

被引：0
|
作者：
Wang, AQ
Qin, TY
机构：
[1] Xian Highway Univ, Dept Basic Sci, Xian 710064, Peoples R China
[2] China Agr Univ, Dept Basic Sci, Beijing 100083, Peoples R China
来源：
ACTA MECHANICA SOLIDA SINICA | 1998年 / 11卷 / 02期
关键词：
two parallel planar cracks; three-dimensional finite body; hypersingular integral equation; stress intensity factor;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By using the Somigliana representation and the concepts of finite-part integrals, a set of hypersingular integral equations of the interaction between two parallel planar cracks in a three-dimensional finite body subjected to arbitrary loads is derived, and then its numerical method is proposed by the finite-part integral method combined with the boundary element method. According to the analytic theory of hypersingular integral equations, the square root models of displacement discontinuities in the elements near the crack front are applied, and thus the computational precision is raised. Based on this, the stress intensity factors can be directly calculated Finally, the stress intensity factors of several typical interaction problems are calculated.
引用
收藏
页码：95 / 103
页数：9
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