Extended finite element method for cohesive crack growth

被引：1278

作者：

Moës, N ^{[1
]}

Belytschko, T ^{[1
]}

机构：

[1] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA

来源：

ENGINEERING FRACTURE MECHANICS | 2002年 / 69卷 / 07期

关键词：

cohesive crack; finite elements; discontinuous approximation; stress intensity factors; size effect;

D O I：

10.1016/S0013-7944(01)00128-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The extended finite element method allows one to model displacement discontinuities which do not conform to interelement surfaces. This method is applied to modeling growth of arbitrary cohesive cracks. The growth of the cohesive zone is governed by requiring the stress intensity factors at the tip of the cohesive zone to vanish. This energetic approach avoids the evaluation of stresses at the mathematical tip of the crack. The effectiveness of the proposed approach is demonstrated by simulations of cohesive crack growth in concrete. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：813 / 833

页数：21

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