Estimation Study of the Residual Stress Redistribution in Crack Propagation Process Based on Hull - Rimmer Theory

¹ School of Mechanical Engineering, Southeast University, Nanjing 211189, China
² School of Mechanical Engineering, Guangxi University of technology, Liuzhou 545006, China

^a zhulin157@163.com
^b mpjia@seu.ediu.cn
^c sgl8913@163.com

Abstract

The redistribution of residual stress appears with the propagation of internal crack or damage, which also has an influence on the fatigue life of structure. A prediction model of residual stress redistribution is raised based on the Hull - Rimmer theory. And the quantitative expression between crack length, initiation crack location, initial distribution of residual stress and redistribution stress is achieved. Then the residual stres of crack tip and the redistribution stress of three instances are predicted, which also compared with the test results. It can be found from the comparison that the prediction results are basically same with the test results. Therefore, the prediction model of residual stress redistribution based on Hull-Rimmer theory can be well used for the precise prediction of residual stress redistribution in the crack propagation process.