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| Fatigue simulation and structure optimization of suspension stabilizer link bracket |
| WANG Guo-Li1,2, HUANG Xiao-Hai2, LIU Shu-Hui3, LI Qing-Wei4 |
1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China；
2. School of Mechanical Engineering， Beijing Institute of Technology， Beijing 100081， China;
3. Pan Asia Technical Automotive Center Co., Ltd.， Shanghai 201201， China;
4. Tianjin Tiande Suspension Systems Co., Ltd.， Tianjin 300480， China |
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Abstract The fatigue analysis and structure optimization for suspension stabilizer link bracket is carried out in order to solve its fracture during conventional vehicle durability test. The FEA model of the stabilizer link bracket was established by the ANSYS software. Based on the static finiteelement fatigue analysis method, the strength analysis was accomplished and the fatigue life was predicted. In accordance with equal strength beam theory, the structure of the stabilizer link bracket was optimized. The correctness of fatigue simulation analysis was verified by fatigue rigtest and crack fracture analysis. The test results show that the fatigue life of the optimized structure fulfils the quality requirements．
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Published: 28 February 2013
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汽车悬架稳定杆连杆支架的疲劳仿真分析及结构优化
针对某型车辆常规耐久性试验过程中稳定杆连杆支架出现断裂的问题，对稳定杆连杆支架进行疲劳寿命分析和结构优化.首先运用ANSYS软件建立稳定杆连杆支架的有限元模型；然后基于静态有限元疲劳分析方法对连杆支架进行强度分析计算，并依据强度分析结果对稳定杆连杆支架进行疲劳寿命预测分析；其次根据等强梁理论对稳定杆连杆支架进行结构优化，支架截面由原来的等截面改为变截面，并对优化后的结构进行疲劳寿命预测；最后通过疲劳台架试验和裂纹断口分析，验证仿真分析结果.通过台架试验和仿真结果的对比可以得出，稳定杆连杆支架优化前后其疲劳寿命预测准确，优化后结构疲劳寿命符合预期.
关键词：
稳定杆连杆支架,
疲劳,
结构优化,
静态有限元法
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