橡胶扭转减振器滑移转矩计算方法研究

A research on the methods for calculation slip torque of rubber damped torsional vibration absorbers

研究了橡胶扭转减振器的滑移转矩计算与实测分析方法。对橡胶扭转减振器的橡胶材料进行了单轴压缩和平面拉伸试验,研究了Mooney-Rivlin和Ogden(N=3)超弹性本构模型用于橡胶扭转减振器滑移转矩计算的适用性。建立了橡胶扭转减振器滑移转矩计算的有限元模型,研究了求解器、质量放大系数、网格属性和加载条件对计算结果和时间的影响。由计算与测试分析的方法,给出了橡胶圈和惯量环、轮毂接触面摩擦系数的确定方法。利用建立的有限元模型,计算分析了2种不同类型的扭转减振器的滑移转矩,并和实测得到的滑移转矩进行了对比分析,计算值和实测值的相对误差小于10%。

In this paper,the calculation and experimental methods for obtaining the slip torque of rubber damper Torsional Vibration Absorber（TVA）are presented.Firstly,the uniaxial compression test and the plane tension test for the rubber materials used for TVA are carried out,and two hyper-elastic constitutive models,Mooney-Rivlin and Ogden（N=3）,are used to find the feasibility of characterizing the rubbers properties.The finite element model for calculating the slip torque of a TVA is presented.The influence of solution methods and the parameters in the model,such as mass scaling factor,mesh property and loading condition,on the estimating time and calculated results are described and discussed.The method for obtaining the friction coefficient between the rubber and hub or inertia ring in a TVA is proposed based on calculation and experiment method.Two types of TVA are taken as studying examples.The shape of rubber ring in one type of TVA is cylinder,whereas the shape in another type of TVA is a cylinder with the middle part of the outer surface is convex.The slip torques of the two type of TVA are calculated and compared with the experiment,and it is shown that the relative error between calculation and experiment is less than 10%.