摘要
基于MSC.Marc通用有限元软件平台开发高效的增强移动热源模型,并采用热-弹-塑性有限元法和增强移动热源模型,对长度为13832 mm的机车车辆大型长直结构焊接变形进行了数值模拟.同时测量了长直结构的焊接变形,并与数值模拟结果进行比较,验证了所开发的有限元计算模型对长直结构焊接变形的准确性与可行性,随后,采用所开发的计算方法分析了不同焊接顺序对机车车辆大型长直结构焊接变形的影响.结果表明,焊接顺序对焊接变形的模态和大小均有显著影响,通过调整焊接顺序能够大幅减小焊接变形,试验结果指导了大型长直结构的实际生产,并且缩短了工艺开发周期.
An efficient enhanced moving heat source model was developed based on the MSC.Marc finite element software platform.The thermo-elastic-plastic finite element method,along with the enhanced moving heat source model,was employed to numerically simulate the welding deformation of a large-scale long straight rolling stock structure measuring 13832 mm in length.Simultaneously,the welding deformation of the long and straight structure was measured experimentally and compared to the numerical simulation results.This comparison verified the accuracy and feasibility of the developed finite element calculation model for welding deformation in such structures.Subsequently,the developed computational method was used to investigate the impact of different welding sequences on the welding deformation of large long straight structures in rolling stock.The calculation results demonstrate that the welding sequence significantly affects both the mode and magnitude of welding deformation.By adjusting the welding sequence,substantial reduction in welding deformation can be achieved.This study provides guidance for the production of large long straight structures and reduces the process development cycle.
作者
张月来
何清和
朱嘉翌
梁归慧
曾炯萌
邓德安
ZHANG Yuelai;HE Qinghe;ZHU Jiayi;LIANG Guihui;ZENG Jiongmeng;DENG Dean(CRRC Zhuzhou Locomotive Co.,Ltd,Zhuzhou,412001;Chongqing University,Chongqing,400045)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2023年第9期106-112,I0009,共8页
Transactions of The China Welding Institution
关键词
大型长直结构
焊接变形
焊接顺序
数值模拟
large long straight structure
welding deformation
welding sequence
numerical simulation
