基于横梁结构改进的乘用车扭力梁轻量化设计  

Lightweight Design of Passenger Car Torsion Beam Based on Improved Crossbeam Structure

作　　者：周伟 黄泰硕 张勋 ZHOU Wei;HUANG Taishuo;ZHANG Xun(BYD Automobile Industry Co.,Ltd.,Shenzhen 518118,China)

机构地区：[1]比亚迪汽车工业有限公司,广东深圳518118

出　　处：《客车技术与研究》2025年第1期36-39,57,共5页Bus & Coach Technology and Research

摘　　要：为实现某乘用车扭力梁轻量化目标,本文将其横梁的原开口截面改变为封闭截面,并建立和验证其有限元模型,综合考虑质量、刚度、强度等约束,对改为封闭截面的横梁进行初始设计和尺寸优化。最终实现扭力梁减重13.95%,取得较好的轻量化效果。To achieve the lightweight goal of a passenger car torsion beam,this paper changes the original open section of its crossbeam to a closed section,establishes and verifies the torsion beam finite element model,and comprehensively considers constraints such as weight,stiffness,and strength to do the initial design and size optimization for the improved closed-section cross beam.Finally,the torsion beam weight reduction of 13.95%and better lightweight effect are realized.

关 键 词：扭力梁 横梁轻量化 有限元 尺寸优化 

分 类 号：U463.33[机械工程—车辆工程]