纯电动汽车两挡变速器壳体强度分析与改进  

Finite Element Analysis and Improvement of Two-Speed Transmission Housing for Pure Electric Vehicle

作　　者：周云山[1] 吴云兵[1] 傅兵[1] 

机构地区：[1]湖南大学汽车电子与控制技术教育部工程研究中心,湖南长沙410082

出　　处：《计算机仿真》2015年第1期179-183,共5页Computer Simulation

基　　金：国家科技部863项目(2012AA111710)

摘　　要：在电动汽车变速器优化设计的研究中,变速器壳体的强度对变速器的传动性能有重要影响。纯电动汽车两挡变速器壳体结构较复杂,且受力极不均匀,难以用传统的解析方法对其进行强度计算。针对上述问题,提出利用有限元法对变速器壳体进行强度分析。研究了两挡变速器的结构及工作原理,计算了极限工况下壳体轴承座载荷,建立了壳体的三维实体模型及有限元模型,得到了壳体的应力分布云图,确定了壳体强度的薄弱环节,并据此提出了改进方案。结果表明:改进后的变速器壳体强度得到了改善,并实现了产品的轻量化,为变速器壳体的设计及生产提供了理论依据。The performance of transmission is greatly influenced by the strength of transmission housing. As the structure of a two-speed transmission housing is complex and the loads is uneven, strength calculation can not be done by traditional analytical method. In response to above problems, finite element method was proposed to analyze housing strength in the paper. The structure and working principle of transmission were studied, and the loads on each beating housing were calculated in limit conditions, and a 3D model and a finite element model were set up, and the stress distribution contour was obtained by finite element analysis. Based on the results, weak spot was found and corresponding improvement scheme was brought forward. The results show that the strength of the refined transmission housing is greatly improved, and the lightweight is achieved. A theoretical basis is provided for the design and production of transmission housing by the analysis results.

关 键 词：纯电动汽车 两挡变速器 壳体 强度分析 改进 

分 类 号：U463.2[机械工程—车辆工程]