A FATIGUE CRACK-PROPAGATION MODEL

被引:60
作者
KUJAWSKI, D
ELLYIN, F
机构
[1] Univ of Alberta, Dep of Mechanical, Engineering, Edmonton, Alberta, Can, Univ of Alberta, Dep of Mechanical Engineering, Edmonton, Alberta, Can
基金
加拿大自然科学与工程研究理事会;
关键词
MATERIALS - Crack Propagation - STRESSES - Strain;
D O I
10.1016/0013-7944(84)90079-1
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A model for fatigue crack propagation has been developed which incorporates mechanical, cyclic and fatigue properties as well as a length parameter. The latter can be associated with the microstructure of the material. The fatigue failure criterion is based on a measure of the dissipated plastic strain energy. This model predicts crack propagation at low and intermediate DELTA K values, i. e. stage I crack growth rate as well as that of the stage II. A number of crack growth rate models proposed earlier, are shown to be particular cases of the one developed herein.
引用
收藏
页码:695 / 704
页数:10
相关论文
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