关键词: 后桥壳, 典型工况, 结构分析, 轻量化设计, 优化

Abstract: Lightweight design was done for the rear axle housing of multi-link rear suspension, based on typical conditions and the method of inertia release. According to the analyses, the maximal stress of the rear axle housing appeared on unilateral pothole condition. It indicated that the thickness of axle shaft sleeve and rear axle housing had an effect on maximal stress value as thickness changed,the maximum stress position would also shift. Finally, the optimized rear axle housing weight loss is of 11.6% compared to the original one, and no durability problems after fatigue tests and durability tests, the optimized rear axle housing can meet the design requirements.

Key words: rear axle housing, typical condition, structure analysis, light weight design, optimization