某车型扭力梁后桥总成优化设计

Optimization Design of Torsion Beam Rear-Axle Assembly on a Particular Car

某车型扭力梁后桥总成开发后,台架试验时出现横梁开裂问题。对台架试验中出现的问题进行优化设计,最终使本款车型的扭力梁后桥达到强度、疲劳设计要求,满足疲劳试验的要求。主要包括4个阶段的整改,每个阶段整改的后桥都进行设计优化,疲劳仿真,疲劳台架,再设计优化的过程。整改期间还包括工艺优化,材料优化的过程。

The cross-beam cracking occurred in the bench test after the torsion beam rear-axle assembly of a particular car was developed. The optimized design is performed based on the problem in this article, thereby enabling this car to satisfy the requirements of rear-axle strength, fatigue design and fatigue test. A four-stage modification is covered in this article. The design optimization, fatigue simulation, fatigue bench test, repeated design optimization are performed with regard to the modified rear axle at each stage. Furthermore, technological and material optimization is also included in the modification period.