Two-dimensional Numerical Estimation of Stress Intensity Factors and Crack Propagation in Linear Elastic Analysis

被引:0
作者
Boulenouar, A. [1 ]
Benseddiq, N. [2 ]
Mazari, M. [1 ]
机构
[1] Djilali Liabes Univ Sidi Bel Abbes, Dept Mech Engn, Sidi Bel Abbes, Algeria
[2] Univ Lille 1, Ecole Polytech Lille, Mech Lab Lille, Villeneuve Dascq, France
关键词
stress intensity factor; crack propagation; mixed mode; inclusion;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
When the loading or the geometry of a structure is not symmetrical about the crack axis, rupture occurs in mixed mode loading and the crack does not propagate in a straight line. It is then necessary to use kinking criteria to determine the new direction of crack propagation. The aim of this work is to present a numerical modeling of crack propagation under mixed mode loading conditions. This work is based on the implementation of the displacement extrapolation method in a FE code and the strain energy density theory in a finite element code. At each crack increment length, the kinking angle is evaluated as a function of stress intensity factors. In this paper, we analyzed the mechanical behavior of inclined cracks by evaluating the stress intensity factors. Then, we presented the examples of crack propagation in structures containing inclusions and cavities.
引用
收藏
页码:506 / 510
页数:5
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