Mixed-mode weight functions in three-dimensional fracture mechanics: Static

被引：13
|
作者：
Wen, PH
Aliabadi, MH
Rooke, DP
机构：
[1] Univ London Queen Mary Coll, Dept Engn, London E1 4NS, England
[2] DRA, Struct Mat Ctr, Farnborough, Hants, England
来源：
ENGINEERING FRACTURE MECHANICS | 1998年 / 59卷 / 05期
关键词：
weight functions; indirect boundary element method; stress intensity factors;
D O I：
10.1016/S0013-7944(97)00157-4
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In this paper, the indirect boundary element method, coupled with the weight function concept, is developed for the analysis of three-dimensional elastostatic fracture mechanics mixed-mode problems. A set Of boundary integral equations for the fictitious loads and the displacement discontinuities are derived. The weight functions used to calculate the stress intensity factors are determined by incrementing the crack front over a small region. The stress intensity factors were also evaluated by the equivalent stress method to compare with those obtained from the weight functions. Results of mixed-mode stress intensity factors are presented for a square bar, with either a rectangular or a circular crack, under static load. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：563 / 575
页数：13
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