Double crack growth analysis in the presence of a bi-material interface using XFEM and FEM modelling

被引：23

作者：

Nasri, K. ^{[1
]}

Abbadi, M. ^{[1
]}

Zenasni, M. ^{[1
]}

Ghammouri, M. ^{[1
]}

Azari, Z. ^{[2
]}

机构：

[1] Univ Mohammed 1, ENSA, Equipe Mecan & Calcul Sci, Oujda, Morocco

[2] Natl Sch Engn Metz, Lab Biomech Polymer & Struct Mech, Metz, France

来源：

ENGINEERING FRACTURE MECHANICS | 2014年 / 132卷

关键词：

Bi-material; Crack path; XFEM; Stress intensity factors; Crack growth; STRESS INTENSITY FACTORS; FINITE-ELEMENT-METHOD; MULTIPLE CRACKS; TIP ENRICHMENT; PROPAGATION; FRACTURE;

D O I：

10.1016/j.engfracmech.2014.07.016

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Standard and extended finite element methods are used to analyse the interaction effect between two cracks and elucidate the parameters that govern the growth and the path of these cracks in a mono-material. The same investigation is then generalised to a galvanised zinc/Trip steel 800 bi-material. The obtained results are afterwards compared to a bimaterial with a softer substrate to check the effect of the substrate rigidity on the crack behaviour. The crack length and the distance between the two cracks are found to have a substantial influence on the crack path divergence. In addition, it is found that the more the substrate is stiff the more the cracks move away from each other. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：189 / 199

页数：11

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