基于动力学仿真的后桥壳改进设计计算  

A Design for Improving the Vehicle Rear Axle Housing Based on Dynamic Simulation

作　　者：唐应时[1] 李立斌[2] 何友朗[1] 肖立军 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082 [2]湖南工业职业技术学院,湖南长沙410208 [3]湖南长丰汽车研发中心,湖南长沙410100

出　　处：《湖南大学学报（自然科学版）》2006年第4期42-45,共4页Journal of Hunan University:Natural Sciences

基　　金："985工程"汽车先进设计制造技术科技创新平台资助项目

摘　　要：某越野车后桥改型后进行台架试验,其桥壳发生了断裂.为了解决此问题,应用ADAMS仿真软件,建立了后悬架动力学模型.然后采用后轮道路载荷谱作为输入载荷,再进行仿真分析,得到了最大峰值载荷时各连接点处的载荷.采用有限元方法对该车后桥壳结构强度、刚度进行计算分析,发现了桥壳断裂的原因,并对其进行了改进设计.改进设计后的后桥壳经台架试验再无断裂现象.In the fatigue test for the modification of A SUV rear axle, part of the housing was fractured. In order to solve this problem, the rear suspension dynamic model was constructed via ADAMS. After inputting the road-load spectrum, all the rear axle link point loads were calculated, and the highest loads on each joint were obtained. Then the mode analysis and fatigue analysis of the rear axle housing were implemented by FEM, and the strength and the stiffness characteristic were worked out. The cause of the fracture was found out and some improvements were made. There have been no such fractures at the improved housing during the bench test.

关 键 词：动力学仿真 后桥壳 道路载荷谱 有限元计算 模态分析 

分 类 号：U469.4[机械工程—车辆工程]