基于静态特性的某汽车驱动桥壳疲劳寿命分析  

Fatigue life analysis of an automobile drive axle housing based on static characteristics

作　　者：郑忠才[1] 孟红博 刘娜[1] 张一凡 张腾 韩东越 吕怀健 ZHENG Zhongcai;MENG Hongbo;LIU Na;ZHANG Yifan;ZHANG Teng;HAN Dongyue;LÜ Huaijian(School of Mechanical and Electrical Engineering,Shandong Jianzhu University,Jinan 250101,Shangdong,China;Shandong Fuyang Hydraulic Technology Co.,Ltd.,Linyi 276400,Shangdong,China)

机构地区：[1]山东建筑大学机电工程学院,山东省济南市250101 [2]山东福阳液压科技有限公司,山东省临沂市276400

出　　处：《农业装备与车辆工程》2023年第7期144-147,165,共5页Agricultural Equipment & Vehicle Engineering

摘　　要：为了分析某汽车驱动桥壳在静态特性下的疲劳寿命能否满足使用要求,首先建立驱动桥壳三维模型,通过有限元分析对驱动桥壳进行静力学分析,得到驱动桥壳在5种典型工况下的应力值和形变值,最大应力为703.69 MPa,最大形变为1.164 mm;然后基于静力学分析结果,通过有限元疲劳分析对驱动桥壳的几种典型工况进行疲劳寿命分析,建立材料的S-N曲线;最后得出驱动桥壳疲劳寿命为1.0×10^(6)次,安全系数最大为15,满足使用要求。In order to analyze whether the fatigue life of an automobile drive axle housing under static characteristics meets the actual requirements,firstly establish a three-dimensional model of the drive axle housing and carry out statics analysis of the drive axle housing through finite element analysis.The stress and deformation values of the drive axle housing under five typical working conditions were obtained,and the maximum stress was 703.69 MPa.The maximum deformation was 1.164 mm.And based on the results of statics analysis,the fatigue life of several typical working conditions of the drive axle housing was analyzed by finite element fatigue analysis.The S-N curve of the material was established on the basis of fatigue analysis theory.Finally,the fatigue life of the drive axle housing was 1.0×10^(6) times,and the maximum safety factor was 15,which met the requirements of use.

关 键 词：有限元分析 驱动桥壳 静态特性 疲劳寿命分析 

分 类 号：U463.218.5[机械工程—车辆工程]