电焊机2024，Vol.54Issue(7)：93-99,7.DOI:10.7512/j.issn.1001-2303.2024.07.13
法兰端面防松片焊点疲劳寿命及分布优化研究
Optimization of Fatigue Life and Distribution of Flanged End-piece Anti-looseness Sheet Solder Joints
徐明刚 1王振 1张从鹏 1管生智 1刘祖煌1
作者信息
- 1. 北方工业大学 机械与材料工程学院,北京 100144
- 折叠
摘要
Abstract
With regard to the fatigue life and solder joint arrangement of flanged end-face flanges,if the solder joint arrange-ment scheme of the workpiece is designed according to the welding standard,the performance of the workpiece material may not be fully developed,if there are too few solder joints in some dangerous areas,it will lead to welding failure,too many solder joints will lead to the destruction of material properties,welding costs increase.Therefore,according to the rela-tionship between the fatigue life and the number of flanged solder joints,the layout of flanged solder joints was optimized to improve the fatigue life of flanged solder joints.Firstly,the layout of flanged end-face anti-looseness solder joint is de-signed.Secondly,a finite element model of anti-looseness welding was established based on Ansys.Gauss heat source model was used as the heat source of anti-looseness welding model by analyzing the heat flux distribution during the weld-ing process.Based on the analysis of the solder joint model of flanged flanges,the maximum strain of different solder joint arrangement of flanged ends is obtained.Finally,the fatigue life prediction model of solder joint is established,and the fa-tigue life of solder joint is predicted and solved according to the strain,the data were fitted with Gauss curve to establish an optimization function.The fitting optimization results show that when 24 inner ring solder joints and 30 outer ring solder joints simultaneously act on the anti loosening sheet,the fatigue life of the solder joints can be well maintained.关键词
电阻点焊:焊点疲劳寿命/焊点分布优化/高斯曲线拟合Key words
resistance spot welding/fatigue life/optimization of solder joint distribution/gaussian curve fitting分类
矿业与冶金引用本文复制引用
徐明刚,王振,张从鹏,管生智,刘祖煌..法兰端面防松片焊点疲劳寿命及分布优化研究[J].电焊机,2024,54(7):93-99,7.
