A simulation on microstructure sensitivity to very-high-cycle fatigue behavior of metallic materials

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• 作者：Zhengqiang Lei ; Jijia Xie ; Aiguo Zhao ; Youshi Hong
• 关键词：Very-high-cycle fatigue ; Tanaka and Mura model ; Microstructure sensitivity ; Monte-Carlo simulation ; Metallic materials
• 刊名：Procedia Engineering
• 出版年：2010
• 出版时间：2010
• 年：2010
• 卷：4
• 期：Complete
• 页码：225-232
• 全文大小：281 K

文摘

This paper studied the microstructure sensitivity to very-high-cycle fatigue of metallic materials based on Tanaka and Mura model by using Monte-Carlo method. In this simulation, local stress, frictional stress and inclusion size are assumed to be random variables, and two sensitivity indicators are proposed: sensitivity of mean value and sensitivity of standard deviation. Results indicate that fatigue failure is most sensitive to frictional stress, and the dispersity of variables also influences the fatigue life.