车身控制模块支架的随机振动有限元疲劳分析及优化

The random vibration fatigue FEA analysis and optimization for body control module bracket

车身控制模块是汽车的重要部件,其支架的设计应该满足车辆行驶过程中车辆行驶随机振动工况下的疲劳寿命。对比实验结果,采用有效的有限元仿真方法,利用Catia软件建立支架的模型,并利用Hypermesh软件进行有限元网格划分,建立合理的有限元模型来进行支架状况的分析。分析结果验证了随机振动的有限元疲劳分析的必要性及有效性。最后,对支架的结构进行了优化,并对优化后的支架进行了随机振动的有限元疲劳分析。

The Body Control Module （BCM） is an important part of the ear, the design of BCM bracket should meet fatigue life requirements under random changeable conditions as vehicle driving. The 3D modal was created by Catia and the finite elements were meshed by Hypermesh, so that the reasonable Finite Element Analysis （FEA） modal has been established for analysis. The results verified that the random vibration FEA fatigue analysis is necessity and validity for BCM bracket. Finally, the BCM bracket has been optimized, and the random vibration FEA fatigue of the optimized bracket has been analyzed.