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车辆悬架的橡胶衬套主要由橡胶材料和被硫化在橡胶上的金属或塑料衬套组成,是一种影响车辆行驶平顺性、操纵稳定性以及NVH等性能的不可或缺的零件。研究了橡胶衬套特性,通过在ABAQUS和HyperStudy中使用3种类型的材料试验数据,引入一种方法来对所选择的超弹性系数进行参数识别及拟合,建立橡胶衬套的高精度有限元模型,设置橡胶衬套的实际约束边界条件,通过仿真试验以得到相应径向与轴向刚度曲线。对仿真和真实试验结果进行对比,发现Van der Waals模型具有比其他本构模型更优越的表现,针对提出该某类衬套,该模型能更好地拟合其超弹性系数。
Rubber bushings for vehicle suspensions, consisting mainly of rubber material and metal or plastic bushings vulcanized on rubber, are an integral part of the vehicle’s ride comfort, handling stability and NVH performance. The properties of rubber bushing were studied. By using three types of material test data in ABAQUS and HyperStudy, a method was introduced to identify and fit the selected hyperelastic coefficient. The rubber bushing’s high-precision finite element Model, set the actual constraints of the rubber bushing boundary conditions, through the simulation test to get the corresponding radial and axial stiffness curve. Comparing the results of simulation and real experiments, it is found that the Van der Waals model has more superior performance than other constitutive models. For the proposed bushing of this kind, the model can better fit the super elastic coefficient.