FATIGUE ANALYSIS OF TENSION SHEAR SPOT WELDS BASED ON MATERIAL PROPERTY GRADIENT

摘要：

Fatigue life analysis was carried out on spot welds,taking into the effect of welding process on local metal mechanical properties within heat affected zone.Considering the relationship between material strength and cyclic stress strain parameters,life prediction with Pollards equation gave results with errors in 2 factors,as well as Barkeys data.Experimental results were further studied with Manson-Coffin damage equation.Results showed that the metal mechanical properties gradient have implicit effect on crack initiation site,cannot be neglected in fatigue life prediction.

关键词： spot welds nominal stress material strength fatigue life

作者: R.J.Wang D.G. Shang

作者单位: Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunmin College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technolog

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 933-936

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）