平板对接接头焊接变形的数值模拟与试验研究

2018-06-15

作者：张红涛1，徐传波1，2，孙思远2，王秋实2 单位：1郑州铁路职业技术学院；2西南交通大学牵引动力国家重点实验室

摘要：为验证数值模拟方法在构件焊接变形预测应用中的可靠性，对某多层焊平板对接接头进行了数值模拟研究与试验验证。共进行了三组焊接试验，采用三维扫描仪对试验后的焊件进行测量，并分析其焊后的残余变形量。基于SYSWELD分析软件，应用热弹塑性有限元法对该平板接头进行了数值模拟。通过将数值模拟仿真结果与试验测量结果进行对比分析，证明了数值模拟方法在焊接变形预测中的可靠性。其中角变形误差为78%，横向收缩变形误差为23.3%，纵向收缩变形误差为15.2%。

关键词：焊接变形；平板对接；数值模拟；SYSWELD

中图分类号：TG441；TH162文献标志码：A

Numerical Simulation and Experimental Research on Welding Deformation of Plate Butt Joint

Zhang Hongtao，Xu Chuanbo，Sun Siyuan，Wang Qiushi

Abstract:In order to verify the reliability of the applying of the numerical simulation in predicting the welding deformation of components，the numerical simulation and experimental verification are carried out for a multilayer welded plate butt joint.In the experiment，three sets of welding experiments are conducted.The three dimensional scanners are used to measure the welding deformation of the samples and rearrange the residual deformation after welding.In the simulation，the thermo elastic plastic finite element analysis method is applied to simulate the plate joint based on the SYSWELD analysis software.Comparing with the numerical simulation and experimental results，the results show that the numerical simulation method is reliable in the prediction of welding deformation，and the error of transverse shrinkage，longitudinal shrinkage and the angular deformation respectively are 7.8%，23.3% and 15.2%.

Keywords:welding deformation；plate butt joint；numerical simulation；SYSWELD