Simulation of microstructurally controlled short crack propagation

被引：0
|
作者：
Künkler, B [1 ]
Schick, A
Fritzen, CP
Floer, W
Krupp, U
Christ, HJ
机构：
[1] Univ Gesamthsch Siegen, Inst Mech & Regelungstech, D-57068 Siegen, Germany
[2] Univ Gesamthsch Siegen, Inst Werkstofftech, D-57068 Siegen, Germany
来源：
STEEL RESEARCH INTERNATIONAL | 2003年 / 74卷 / 08期
关键词：
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A model for the simulation of stage I fatigue crack propagation is presented. The model considers the barrier effect of grain boundaries and phase boundaries on short crack propagation rate and the crack path deflection due to the microstructure. The plastic zones in front of the crack tip are modelled as yield strips. The mechanical boundary value problem is solved numerically by a boundary element method. The method was applied based on a statistical model of duplex microstructures, generated by a special Voronoi-algorithm, so that the influence of the distribution of phases on crack propagation can be analysed.
引用
收藏
页码：514 / 518
页数：5
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