摘要
提出了基于实测载荷谱的电驱动总成差速器壳体疲劳寿命分析方法。以某电动汽车电驱动总成差速器壳体为研究对象,建立了壳体有限元模型,进行了模态仿真分析,并进行了试验验证。在此基础上,以差速器壳体实测载荷谱作为载荷输入,以实车行驶工况为边界约束条件,对差速器壳体进行了动力学仿真分析。综合电驱动总成差速器壳体动力学有限元分析结果、名义应力法及壳体修正S-N曲线,对电驱动总成差速器壳体疲劳寿命进行了分析和研究。结果表明,差速器壳体疲劳失效位置与实际行驶时疲劳失效位置一致,基于实际行驶载荷谱能够准确分析差速器壳体实际行驶疲劳寿命情况。
A method for the fatigue life analysis of the differential housing of the electric drive assembly based on the measured load spectrum is proposed. Taking the housing of an electric drive assembly differential of an electric vehicle as the research object, a finite element model of the housing is established, modal analysis is carried out, and modal test verification is carried out. On this basis, with the measured load spectrum of the differential housing as the load input, and the actual vehicle driving conditions as the boundary constraints, the dynamics simulation analysis of the differential housing is carried out. Based on the dynamic finite element analysis results of the differential housing of the electric drive assembly, the nominal stress method and the modified S-N curve of the housing, the fatigue life of the differential housing of the electric drive assembly is analyzed and researched. The results show that the fatigue failure position of the differential housing is consistent with the fatigue failure position during actual driving. Based on the actual driving load spectrum, the actual driving fatigue life of the differential housing can be accurately analyzed.
作者
邹喜红
苟林林
熊锋
王超
蒋明聪
林于强
王万英
ZOU XiHong;GOU LinLin;XIONG Feng;WANG Chao;JIANG MingCong;LIN YuQiang;WANG WanYing(Key Laboratory of Advanced Manufacturing and Test Technology for Automobile Parts of Ministry of Education,Chongqing University of Technology,Chongqing 400054,China;Chongqing Chang5 an Automobile Co.,Ltd.,Chongqing 400023,China)
出处
《机械强度》
CAS
CSCD
北大核心
2023年第1期228-236,共9页
Journal of Mechanical Strength
基金
国家重点研发计划项目(2018YFB0106100)
重庆市科技重大主题专项重点研发项目(cstc2018jszx-cyztzxX0005)
电动汽车产业技术创新战略联盟定向共性技术项目(CA2019)
重庆市自然科学基金项目(cstc2020jcyj-msxmX0458)
重庆市教委科学技术研究项目(KJQN2021101111)
重庆市巴南区科技人才专项(2020TJZ021)
重庆理工大学科研启动基金支持项目(2019ZD79)资助。
关键词
电驱动总成差速器壳体
模态试验
实测载荷谱
动力学分析
疲劳寿命
Differential housing of electric drive assembly
Modal test
Measured load spectrum
Dynamic analysis
Fatigue life
