鼓式制动器摩擦尖叫的复模态模型与影响因素研究  

Complex modal analysis model for frictional squeal of an automotive drum brake and its affect factors

作　　者：庞明[1,2] 张立军[1,2] 孟德建[1,2] 余卓平[1,2] 

机构地区：[1]同济大学汽车学院,上海201804 [2]同济大学新能源汽车工程中心,上海201804

出　　处：《振动与冲击》2014年第8期35-41,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51175380);中央高校基本科研业务费专项资金

摘　　要：针对某型号鼓式制动器,应用ABAQUS软件建立了摩擦尖叫有限元模型,通过零部件自由模态试验和制动尖叫台架试验验证了模型的正确性。在此基础上,进行了制动蹄摩擦衬片弹性模量、制动压力和摩擦系数对摩擦尖叫倾向性的影响分析;引入制动鼓与制动蹄间的接触压力分布特性,结合复模态理论,探索了前述因素对摩擦尖叫的影响的内在机制。A number of structural,material,operational and environmental factors have great influences on friction induced squeal of an automotive brake,and their influencing mechanism is a significant and challenging issue to be solved .Selecting a certain type of drum brake as a study object,a drum brake finite element model for its frictional squeal was established using ABAQUS,a free-free modal test of individual brake components and a brake squeal bench test were performed to verify the correctness of the model.Then,the impacts of Young＇s modulus of shoes＇ linings,brake pressure and friction coefficient on the squeal propensity were analyzed.By introducing the contact pressure distribution properties between drum and shoes,the influencing mechanism of the factors mentioned above on the squeal propensity was studied based on the complex modal analysis theory.

关 键 词：汽车鼓式制动器 摩擦尖叫 复模态分析 影响因素 接触压力分布 

分 类 号：U463.511[机械工程—车辆工程]