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机器设计,基于有限元的新型电动汽车一体化电动桥委顿寿命剖析

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基于有限元的新型电动汽车一体化电动桥委顿寿命剖析

Fatigue Life Analysis of a New Electric Vehicle Integrated Driving Axle Based on FEM

公费出书那边牢靠

择要:公费出书提出一种新型的电动汽车一体化电驱动后桥,并停止桥壳委顿寿命和模态有限元剖析。基于ANSYS Workbench协同仿真平台树立一体化后桥有限元模子,在最大载荷工况下对桥壳停止静力学剖析,失掉桥壳应力和位移散布纪律;进而对桥壳停止委顿寿命和模态剖析,失掉桥壳各局部委顿寿命和平安系数以及1-6阶固有振动频率;有限元剖析后果标明,电驱动后桥具有充足的静强度和刚度,委顿寿命到达国度规范,不会发生共振毁坏。
要害词: 电动汽车;电驱动后桥;模态剖析;委顿寿命
LI Congbo*, ZHAO Laijie, LI Yue, CHEN Wenqian
(  State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030;  )
Abstract: A new type of integrated electric drive rear axle for electric vehicle is presented. The fatigue life and modal of the rear axle is analyses. The finite element model of the integrated rear axle is established based on collaborative simulation platform ANSYS Workbench. The distributions of stress and displacement are obtained. And then, the 1st to 6st natural frequencies, fatigue life and safety factor of the drive axle housing are determined through the analysis of the fatigue life and modal. The result of the FEA shows that the electric drive rear axle has adequate strength and stiffness. Also the electric drive rear axle’s fatigue life meets the requirement of national standard and the resonance failure cannot emerge.
Keywords: electrical vehicle; electric drive rear axle; modal analysis; fatigue life

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