基于有限元计算的汽车空心稳定杆疲劳分析

Fatigue Life of Vehicle Hollow Stabilizer Bar Based on Fem Analysis

基于传统空心稳定杆有限元以及疲劳分析运算过程缓慢,衬套约束繁琐,运算结果又往往与实际计算结论偏差大。本文采用HyperMesh有限元软件,对空心稳定杆不同约束方式进行仿真对比并验证,得出最佳模拟衬套作用的方案。相比传统空心稳定杆有限元分析,简化了衬套建模,能在短时间内得到空心稳定杆的应力分布以及疲劳寿命等,给空心稳定杆材料的选择以及疲劳设计方面提供了有力的帮助。

The finite element and fatigue analysis of the traditional hollow stabilizer bar are too slow and the bushing constraints are cumbersome. The results are often deviated from the actual calculation. In this paper, HyperMesh finite element software is used to simulate the hollow stabilizer bar with different connection methods. Compared with the simulation results, the optimal formula can be obtained. Compared to finite element analysis of the traditional hollow stabilizer bar, the optimal formula saves simulation time, can get the stress distribution and fatigue life in a short time. This method provides a powerful help to material selection and fatigue design.