A strip yield model for two collinear cracks

被引：28

作者：

Chang, Dh. ^{[1
]}

Kotousov, A. ^{[1
]}

机构：

[1] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia

来源：

ENGINEERING FRACTURE MECHANICS | 2012年 / 90卷

关键词：

Multiple site damage (MSD); Strip yield model; Distributed dislocation technique; Foppl integral equation; Plastic collapse; Through-the-thickness crack; Crack interaction; MULTIPLE-SITE DAMAGE; RESIDUAL STRENGTH; LINK-UP; PANELS; FRACTURE; PLATES;

D O I：

10.1016/j.engfracmech.2012.04.031

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper two alternative approaches for analysing the non-linear interaction between two equal-length collinear cracks subjected to remote tensile stress on infinity are developed. The approaches are based on the classical Dugdale strip yield model and utilise the distributed dislocation formulation to represent two through-the-thickness cracks in an infinite plate. In the first approach the solution is obtained analytically by solving Hoppl integral equation; in the second a numerical procedure based on the Gauss-Chebyshev quadrature method is applied. The latter approach can be extended to other multi-crack problems or more complicated types of loading. The developed approaches are validated against previously published studies and new results for crack tip opening displacement are presented. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：121 / 128

页数：8

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