考虑强度和疲劳强度的机车抱轴箱体轻量化设计  

Lightweight Design of Locomotive Axle Holding Box Considering Strength and Fatigue Strength

作　　者：焦柏儒 郭明达 王世阔 刘喜微 韩佳霖 秦睿贤 Jiao Bairu;Guo Mingda;Wang Shikuo;Liu Xiwei;Han Jialin;Qin Ruixian(Key Laboratory of Railway Industry on Safety Service Key Technologies for High-speed Train,Dalian Jiaotong University,Liaoning,Dalian 116028,China;Shenyang EMU Depot,China Railway Shenyang Bureau Group Co.,Ltd.,Liaoning,Shenyang 110000,China)

机构地区：[1]大连交通大学高速列车服役安全关键技术铁路行业重点实验室,辽宁大连116028 [2]中国铁路沈阳局集团有限公司沈阳动车段,辽宁沈阳110000

出　　处：《铁道技术标准（中英文）》2023年第9期41-48,共8页Railway Technical Standard(Chinese & English)

基　　金：2022年辽宁省教育厅基本科研项目(LJKZZ20220059)。

摘　　要：抱轴箱是机车转向架的重要组成部分,在支撑、固定驱动电机和保持运行平稳上起着重要作用,其轻量化设计可有效改善转向架的力学性能。本文建立了机车抱轴箱有限元模型,采用Ansys分析5种超常工况下的结构强度,采用Goodman-Smith曲线对3种运营工况进行疲劳强度分析。随后,以体积分数、周向循环对称为约束条件,以加权柔度最小为优化目标,利用OptiStruct软件对其进行多工况拓扑优化设计,优化后的抱轴箱结构可消除多个应力集中点,并实现10.8%的减重。The axle box is a crucial component of a locomotive′s bogie,playing a significant role in supporting and securing the drive motor and maintaining smooth operation,and its lightweight design can effectively improve the mechanical properties of the bogie.In this paper,a finite element model of locomotive axle box is established,and Ansys is employed to analyze its structural strength under five abnormal working conditions,and the fatigue strength analysis of three working conditions is analyzed by Goodman-Smith curve.Subsequently,with the volume fraction as the constraint,axial cyclic symmetry and the weighted flexibility as the minimum optimization goal,OptiStruct software was used to optimize the multi-condition topology.The optimized axle box structure could eliminate multiple stress concentration points and achieve 10.8%weight reduction.

关 键 词：OptiStruct 抱轴箱 Goodman 拓扑优化 

分 类 号：U270.33[机械工程—车辆工程]