汽车复合制动气室复位弹簧建模及仿真研究  

Modeling and simulation of return springs in automobile spring brake chambers

作　　者：魏青[1] 罗哉[1] 

机构地区：[1]中国计量学院计量测试工程学院,浙江杭州310018

出　　处：《中国计量学院学报》2014年第4期380-384,共5页Journal of China Jiliang University

基　　金：国家质检总局公益性行为科研专项项目(No.201310284)

摘　　要：以汽车复合制动气室行车制动腔内的复位弹簧为研究对象,利用Pro-E与Ansys workbench软件对其进行实体建模和有限元分析,探讨模型的有限元处理方法,分析网格划分的可用性.采用Ansys workbench软件对复位弹簧进行疲劳分析,得到应力应变分布特征和疲劳寿命曲线;进一步对复位弹簧进行模态分析,求得在500 kPa气压下1～4阶复位弹簧模态响应图,找出所建模型的薄弱点;揭示了在循环载荷作用下复位弹簧失效的根源和规律,对进一步开展复位弹簧结构优化设计有重要意义.Pro E and ANSYS workbenches were used for the modeling and finite-element processing of the return spring of the driving brake cavity. With ANSYS workbench software, we discussed the fatigue analysis of the return spring, got the stress and strain distribution and the fatigue life curve. By the model analysis of the return spring, we obtained the first-to fourth order return spring vibration mode diagrams at an air pressure of 500 KPa and found the weak links of the established return spring model. The study reveals the critical cause and the rule of the return spring failure under cyclic loading. These results have significance guidance for the further optimization of the return spring structural design.

关 键 词：行车制动 制动气室 复位弹簧 疲劳分析 模态分析 

分 类 号：U463.55[机械工程—车辆工程]