汽车悬架稳定杆连杆支架的疲劳仿真分析及结构优化  

Fatigue simulation and structure optimization of suspension stabilizer link bracket

作　　者：王国丽[1,2] 黄小海[2] 刘树辉[3] 李庆伟 

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,吉林长春130025 [2]北京理工大学机械与车辆学院,北京100081 [3]上海泛亚汽车技术中心有限公司,上海201201 [4]天津天德减震器有限公司,天津300480

出　　处：《工程设计学报》2013年第1期18-21,共4页Chinese Journal of Engineering Design

基　　金：国家自然科学基金资助项目(50875022);吉林大学汽车仿真与控制国家重点实验室开放基金资助项目(20111105)

摘　　要：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.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 finite-element 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.

关 键 词：稳定杆连杆支架 疲劳 结构优化 静态有限元法 

分 类 号：U463.33[机械工程—车辆工程]