汽车差速器壳断裂失效分析及有关概要.pdfVIP

学兔兔 · 材料．工艺．设备． 汽车差速器壳断裂失效分析★ 黄平辉1余显忠 ，2 揭 钢1 万雄飞1 (1．江西江铃底盘股份有限公司；2．华中科技大学 数字制造装备与技术国家重点实验室) 【摘要】针对某汽车驱动桥差速器壳体断裂情况，首先利用材料试验检验分析了该驱动桥差速器壳体所采用球 墨铸铁材料的金相组织和铸造等级，然后根据((Q／T 543--1999汽车驱动桥台架试验评价指标》试验标准．采用有限 元分析方法建立了该差速器壳体的有限元模型，利用有限元分析软件ABAQUS进行差速器壳体的静强度分析．得到 了该差速器壳的应力分布情况和应力集中部位。通过与样件失效部位对比分析，确定了该差速器壳体断裂失效的原 因．为改进设计提供了理论依据 主题词：差速器 壳体 失效 有限元 中图分类号：U463．218+．4 文献标识码：A 文章编号：1000—3703(2010)02—0054—04 Breaking Failure Analysis of the Automobile Differential Housing Huang Pinghui Yu Xianzhong 。Jie Gang Wan Xiongfei (1．Jiangxi JiangLin Chassis Co．，LTD；2．State Key Laboratory of Digital Manufacturing Equipment Technology，Huazhong University of Science and Technology) 【Abstract]In view-of the breaking of differential housing of driving axle，the metallographic structure component and the foundry grade of the ductile east iron adopted in differential housing of the driving axle are analyzed by the material test．According to the standard of Q／T 543-1 999 Drive Axle Bench Test Evaluation Criteria ，a finite element model is then built with finite—element analysis method，and the static strength analysis is made by ABAQUS，a software of finite-element analysis and obtain some information on stress distribution and stress concentration of the differential housing．By the comparison with the failure location of the sample，the cause of breaking of differential housing is defined， providing theoretical basis for the next step design． Key words：Differential，Housing，Failure，Finite element 模式是由于差速器壳侧连接壳臂发生弯曲疲劳开裂 1 前言