鼓式制动器的有限元模拟与接触分析  

Finite element simulation and contact analysis of drum brakes

作　　者：马迅[1] 解聪[1] 

机构地区：[1]湖北汽车工业学院汽车系,十堰442002

出　　处：《机械设计与制造》2011年第8期16-18,共3页Machinery Design & Manufacture

基　　金：湖北省教育厅科研项目资助(D20102001)

摘　　要：运用ANSYS Workbench平台建立了某鼓式制动器的三维有限元模型,对摩擦衬片与制动鼓之间的摩擦接触进行模拟。通过改变边界条件的施加方式及不同的接触对设置参数,确定了模拟鼓式制动器制动过程的接触分析边界条件及接触对的设置方法。采用三个载荷步加载,分析了制动力矩在制动过程中的变化规律,得出摩擦力矩达到平稳时接触压强的分布特性及制动器的等效应力与变形。为优化制动器结构参数、改善鼓式制动器磨损均匀性和制动效能提供了参考依据。A three dimensional FEM is established for certain drum brake by using finite element software ANSYS with new interface of Workbench and friction contact between brake drum and friction linings is simulated.By changing the method for imposing boundary conditions and setting parameters for different contact pairs,boundary conditions for contact analysis and method for setting contact pair are determined in simulating the braking process of the drum brakes.The change of braking torque in the process of braking is analyzed by applying three load steps.Thus the distribution character for the contact pressure and equivalent stress and deformation are obtained as friction torque is stable.It provides reference for optimizating the structural parameters and improving the evenwear of drum brakes as well as braking efficiency.

关 键 词：鼓式制动器 有限元法 接触分析 ANSYS WORKBENCH 

分 类 号：TH132[机械工程—机械制造及自动化]