A model to predict the relaxation of weld residual stress by cyclic load: Experimental and finite element modeling

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• 作者：Xue-fang Xie^a ; Wenchun Jiang^a ; ^{jiangwenchun@126.com} ; Yun Luo^a ; Shugen Xu^a ; Jian-Ming Gong^b ; Shan-Tung Tu^c
• 关键词：Weld residual stress ; Fatigue ; Stress relaxation ; Cyclic plasticity ; FEM ; Prediction model
• 刊名：International Journal of Fatigue
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：95
• 期：Complete
• 页码：293-301
• 全文大小：1726 K
• 卷排序：95

文摘

The residual stress under cyclic loading are evaluated by experiment and FEM. An analytical model is proposed to predict the relaxation of weld residual stress. 45–60% of the maximum residual stresses are released during the first cycle. The residual stresses at surface are easier to release than those at the interior.