Effect of Crack Tip Compressive Stress on Crack Propagation Plastic Zone

Xiao-yan ZHANG, Zhi-wei WANG, Xuan LI, Jie HOU, Yong-qiang HE, Wei-dong LIANG

Abstract


Elastic-plastic finite element model of high strength aluminum alloy plate with long and short penetrating cracks in the center was built. Based on the model, tension and compression loading simulation was conducted. The analysis shows that the compressive stress has a significant effect on the crack tip plastic zone and fatigue crack propagation.

Keywords


Finite element analysis, Compressive stress, Fatigue crack, Plastic zone.


DOI
10.12783/dtmse/amst2016/11328

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