橡胶衬套材料的超弹性力学行为研究(英文)

A Study on Mechanical Behavior of Hyperelastic Material for Rubber Bushing

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。

The rubber bushings of vehicle suspension,made of mainly rubber materials and a metal or plastic sleeve vulcanized to rubber,are indispensable components impacting vehicle ride comfort,handle stability and NVH etc.In this paper,the characteristics of bushing rubbers were researched to intensive analyze how the rubber bushing affects vehicle performances.A method is introduced to identify and fit the hyperelastic coefficients of the selected constitutive model by u-sing three types of material test data in ABAQUS and HyperStudy,and a more high-accurate Fi-nite Element （FE）model of rubber bushing was built to simulate the radial and axial stiffness curves by setting actual constraint conditions.A comparison was carried out between the simula-tion results and experimental results.The conclusion shows that the Van der Waals model is like-ly a clearer superiority representation than other constitutive models,which can be used for the simulation to better fit the hyperelastic coefficients.