个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:机械工程学院
学科:机械设计及理论. 机械电子工程
电子邮箱:huojunzhou@dlut.edu.cn
论文成果
当前位置: 复杂机电系统创新设计 >> 科学研究 >> 论文成果Theoretical crack growth prediction model for thick plate butt welding joints based on stress/strain transitions
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论文类型:期刊论文
发表时间:2017-10-01
发表刊物:INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
收录刊物:Scopus、SCIE、EI
卷号:93
期号:1-4
页面范围:1183-1198
ISSN号:0268-3768
关键字:Welding structure; Crack growth model; Welding residual stress; Fatigue life
摘要:A short time scale fatigue crack growth model for butt welding joints that considers the influence of welding residual stress is presented here. The reliability of the proposed model is verified by means of fatigue experiments of mode I crack growth under the influence of residual stress. The results demonstrate that changes in the residual stress distribution in the thickness direction are small on the symmetric plane of the weld line, and the residual stress distribution in the same direction of external load is non-negligible. The crack growth behavior in the weld line fluctuates with respect to time, and the theoretical prediction curve is in good agreement with the experimental data during the early and middle stages of crack growth. This study provides a theoretical basis for predicting the fatigue life of welded parts involving relatively thick plate.