机车车辆转向架构架侧梁的焊接变形有限元分析  

Finite Element Analysis of Welding Deformation of Side Beam of Locomotive and Rolling Stock Bogie Frame

作　　者：孙莉 张腾[2] 刘晨曦[3] SUN Li;ZHANG Teng;LIU Chenxi(Tianjin Electric Locomotive Co.,Ltd.,Tianjin 300452,China;CNNC Southwest Institute of Physics,Chengdu 610041,Sichuan Province,China;School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津电力机车有限公司,天津300452 [2]核工业西南物理研究院,四川成都610041 [3]天津大学材料科学与工程学院,天津300350

出　　处：《天津科技》2023年第1期59-61,67,共4页Tianjin Science & Technology

摘　　要：对机车车辆转向架构架侧梁的多层多道焊接变形进行模拟,提出一种先局部后整体的固有应变方法,通过局部典型接头的热弹塑性有限元分析得到其固有应变,并将其施加于大型结构上,从而简化了计算流程。模拟结果与实测结果吻合度达到80%,证明该方法能够快速准确地模拟大型构件的焊接变形。The multi-layer and multi-channel welding deformation of the side beam of the locomotive and rolling stock bogie frame is simulated.An intrinsic strain method named of first local and then whole finite element analysis is proposed.The inherent strain of the local typical joint is obtained through the thermal elastoplastic finite element analysis,and applied to the large structure,thus simplifying the calculation process.The coincidence between the simulation results and the measured results is up to 80%,which proves that this method can quickly and accurately simulate the welding deformation of large components.

关 键 词：大型结构 焊接变形 有限元分析 固有应变 

分 类 号：TG457.2[金属学及工艺—焊接]