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.
出处
《工程设计学报》
CSCD
北大核心
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)
关键词
稳定杆连杆支架
疲劳
结构优化
静态有限元法
stabilizer link bracket
fatigue
structure optimization
static finite element method
