基于焊缝疲劳寿命预测的某轿车后桥改进设计  

The Design Improvement of Car Rear Axle based on Fatigue Life Prediction of Seam Weld

作　　者：寇宏滨[1] 赵永昌[1] 刘立刚[1] 

机构地区：[1]泛亚汽车技术中心有限公司

出　　处：《汽车技术》2010年第5期34-36,共3页Automobile Technology

摘　　要：叙述了运用焊缝疲劳寿命预测技术对某车型扭转梁式后桥进行疲劳失效再现和改进设计的过程,改进后的后桥可以达到物理试验一次通过。虚拟分析预测出的疲劳寿命结果与物理试验结果非常接近,因此可以利用其部分或全部替代物理试验来验证后桥的改进设计。实践证明,基于有限元法的焊缝疲劳寿命预测技术能够有效降低开发过程中的盲目性,减少试验数量,缩短开发周期。The article introduces briefly the process of twist rear axle fatigue failure reproduction and design improvement based on the fatigue life prediction of seam weld, the improved twist rear axle can pass the physical durability test one-off. The predicted fatigue life with virtual analysis is very close to result of the physical test, therefore this method can be use to replace some or all the physical test during the twist axle development. Practice proves that the fatigue life prediction method of seam weld can effectively reduce the blindness of development, the quantities of physical test and the development cycle.

关 键 词：后桥 焊缝 疲劳寿命 有限元 

分 类 号：U463[机械工程—车辆工程]