Residual stress in welded structures is one of the important factors affecting the fatigue performance of welded structures.In this paper,the Morrow equation is adopted,and the mean stress is modified to account for the influence of residual stress.Based on this,a prediction model for fatigue strength and fatigue life is established.The results of the proposed prediction model are compared with experimental results from literature.The results show that the prediction results of the proposed model are in good agreement with the experimental fatigue strength and life,which can reduce the number of fatigue tests and costs,and has good engineering reference value.
关键词
平均应力/残余应力/疲劳强度/疲劳寿命预测
Key words
Mean Stress/Residual Stress/Fatigue Strength/Fatigue Life Prediction
维普
万方数据