电焊机2025，Vol.55Issue(7)：73-78,6.DOI:10.7512/j.issn.1001-2303.2025.07.07
轨道车辆铝合金车体不同断面型材的焊接变形数值模拟计算分析
Numerical Simulation and Analysis of Welding Deformation of Alumi-num Alloy Profiles for Rail Vehicle Bodies
耿明 1王亚男 1刘松 1王隽 1邵有发 1郭春成1
作者信息
- 1. 中车长春轨道客车股份有限公司,吉林 长春 130062
- 折叠
摘要
Abstract
To optimize the welding deformation control process for aluminum alloy bodies in rail vehicles,this paper pro-poses a wide-section profile design.The design involves replacing four profiles with two for the side wall,five with three for the floor,and five with three for the roof.A numerical simulation analysis was conducted to compare the welding deforma-tion trends and magnitudes between the wide-section profiles and the conventional narrow-section(existing)profiles.Re-sults indicate that both wide-and narrow-section profiles exhibit consistent deformation trends:weld zones show downward concavity,surrounding base metal warps upward,and free edges experience greater deformation.However,the wide-section profiles demonstrate significantly reduced deformation.Specific data reveal that the maximum deformation of the side wall decreases from 24.2 mm to 14.0 mm(a reduction of 42.2%),the floor from 140 mm to 57.4 mm(a reduction of 59%),and the roof from 178.2 mm to 46.4 mm(a reduction of 74%).From a process perspective,wide-section profiles exhibit smaller welding deformation,improved dimensional accuracy,higher manufacturing efficiency,and a more rational structure.This study provides theoretical support for lightweight design and process optimization of aluminum alloy vehicle bodies.关键词
宽幅断面/型材拼焊/侧墙/地板/车顶/变形量Key words
wide cross-section/profile welding/side wall/floor/roof/deformation分类
矿业与冶金引用本文复制引用
耿明,王亚男,刘松,王隽,邵有发,郭春成..轨道车辆铝合金车体不同断面型材的焊接变形数值模拟计算分析[J].电焊机,2025,55(7):73-78,6.
