Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM

被引：28
|
作者：
Kumar, Sachin [1 ]
Shedbale, A. S. [1 ]
Singh, I. V. [1 ]
Mishra, B. K. [1 ]
机构：
[1] Indian Inst Technol Roorkee, Dept Mech & Ind Engn, Roorkee 247667, Uttar Pradesh, India
来源：
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING | 2015年 / 9卷 / 04期
关键词：
XFEM; von-Mises yield criterion; isotropic hardening; fatigue crack growth; J-integral; EXTENDED FINITE-ELEMENT; ADAPTIVE MULTISCALE METHOD; MESHFREE METHOD; LEVEL SETS; CLOSURE; SIMULATION; FRACTURE; PROPAGATION; DEFORMATION; INITIATION;
D O I：
10.1007/s11709-015-0305-y
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, elasto-plastic XFEM simulations have been performed to evaluate the fatigue life of plane crack problems in the presence of various defects. The stress-strain response of the material is modeled by Ramberg-Osgood equation. The von-Mises failure criterion has been used with isotropic hardening. The J-integral for two fracture modes (mode-I and mode-II) is obtained by decomposing the displacement and stress fields into their symmetric and antisymmetric parts, then individual stress intensity factors are extracted from J-integral. The fatigue life obtained by EPFM is found quite close to that obtained by LEFM.
引用
收藏
页码：420 / 440
页数：21
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