摘要
采用热弹塑性有限元方法对T型焊接接头固有应变与焊接速度之间的相关性进行研究。基于有限元软件Sysweld计算得到焊接速度为5~11 mm/s等7个方案下的横向、纵向和等效固有应变值,并绘出焊接速度与横向、纵向和等效固有应变的曲线图,再通过数值分析方法计算其线性相关系数r以验证其线性相关性。结果表明,焊接速度与T型接头横向、纵向及等效固有应变存在良好的线性相关性,且横向固有应变受焊接速度的影响最大,纵向固有应变受焊接速度的影响较小。采用最小二乘法拟合出最佳趋近直线。
Take the thermal elastic-plastic finite element method to study the correlation between welding speed and inherent strain in T-joint. Calculate the transverse, longitudinal,and the equivalent inherent strain values of 7 plans whose welding speed among 5- 11 mm/s based on the finite element software-Sysweld,and draw up the curve graphs of the welding speed and inherent strain in the transverse,longitudinal and the equivalent. Then calculate the modulus of linear correlation by numerical analysis method to prove the linear relationship of wehting speed and inherent strain in T-joint. The results show that there is a good linear eon＇elation between wehting speed and inherent strain in T- joint. Finally, use the c, urve fitting formula to find out the best approaching straight line.
出处
《电焊机》
2016年第12期21-25,共5页
Electric Welding Machine
基金
国家自然科学基金(51205324)
牵引动力国家重点实验室自主研究课题(2015TPL-T10)
关键词
焊接速度
固有应变
焊接接头
线性关系
welding speed
inherent strain
welding joint
linear relationship
