Quarter elliptical crack growth using three dimensional finite element method and crack closure technique

被引：0
|
作者：
Mohammad-Hosein Gozin
Mehrdad Aghaie-Khafri
机构：
[1] K.N. Toosi University of Technology,Faculty of Mechanical Engineering
来源：
Journal of Mechanical Science and Technology | 2014年 / 28卷
关键词：
Crack closure; Finite element analysis; Fatigue crack growth; Remeshing technique;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Shape evolution of a quarter-elliptical crack emanating from a hole is studied. Three dimensional elastic-plastic finite element analysis of the fatigue crack closure was considered and the stress intensity factor was calculated based on the duplicated elastic model at each crack tip node. The crack front node was advanced proportional to the imposed effective stress intensity factor. Remeshing was applied at each step of the crack growth and solution mapping algorithm was considered. Crack growth retardation at free surfaces was successfully observed. A MATLAB-ABAQUS interference code was developed for the first time to perform crack growth on the basis of crack closure. Simulation results indicated that crack shape is sensitive to the remeshing strategy. Predictions based on the proposed models were in good agreement with Carlson’s experiments results.
引用
收藏
页码：2141 / 2151
页数：10
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