钢-铝混合客车车体关键承载部件铆接数量及尺寸优化  

Riveting Quantity and Size Optimization of Key Load-Bearing Parts of Steel-Aluminum Mixed Rail Vehicle Body

作　　者：谢素明[1] 曹益熙 程亚军 XIE Suming;CAO Yixi;CHENG Yajun(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116028,China;CRRC Changchun Railway Passenger Vehicle Co.,Ltd,Changchun 130062,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116028 [2]中车长春轨道客车股份有限公司国家轨道客车工程研发中心,吉林长春130062

出　　处：《大连交通大学学报》2022年第3期14-19,共6页Journal of Dalian Jiaotong University

基　　金：国家高速列车技术创新中心研发计划资助项目(CXKY-02-01-01(2020))。

摘　　要：采用有限元分析与结构优化技术研究钢-铝混合客车车体关键承载部件铆接数量及尺寸优化问题.首先,建立某钢-铝混合地铁车体有限元模型,依据BS EN12663-2010标准中的关键静态载荷,分析与确定车体枕梁和缓冲梁及其铆接联结的传力特征;接着,分别建立枕梁与缓冲梁优化模型,利用变密度法分别对它们与车体边梁的铆接数量进行布局优化,并在此基础上进一步对铆钉尺寸进行优化设计.优化后枕梁与缓冲梁的铆接数量均减少大于30%,同时二者铆钉的公称直径最大降低了54%;最后,综合考虑制造工艺和铆钉参数等方面因素,对优化结果进行修正并将其应用到整车车体模型中,计算结果表明:车体强度满足设计要求,缓冲梁铆钉优化前后的最大剪切力变化为5.31%.The riveting quantity and size optimization of key load-bearing parts of steel-aluminum mixed rail vehicle body are studied by using finite element analysis and structure optimization technology.Firstly,the finite element model of a steel-aluminum mixed rail vehicle body is established,and the force transmission characteristics of the pillow beam,buffer beam and their riveting connection are analyzed and determined according to the key static loads in BS EN 12663-2010.Then,the optimization models of the pillow and buffer beams are established respectively,and the layout of the riveting quantity between them and side beam of the vehicle body is optimized by using variable density method.On this basis,the rivet size is further optimized.After optimization,the riveting quantity of the pillow and buffer beams is reduced by 35%,and the nominal diameter of both rivets is reduced by up to 54%at most.Finally,the optimization results are modified and applied to the vehicle body model considering the manufacturing process and rivet parameters and other factors.The calculation results show that the vehicle body strength meets the design requirements,and the maximum shear force change of buffer beam before and after optimization is 5.31%.

关 键 词：钢-铝混合地铁车体 铆接 布局优化 尺寸优化 

分 类 号：U270.6[机械工程—车辆工程]