液阻橡胶隔振器在汽车隔振系统上的应用研究

Applied of hydraulic rubber isolator in the automobile vibration isolation system

为了解决发动机扭矩激励带来的振动噪音及路面激励带来的胎噪等问题,进而提高汽车的噪声、振动和声振粗糙度(noise,vibration and harshness,NVH)性能,将隔振系统应用在汽车的动力总成系统和行驶系统之中。对隔振系统的结构性差异进行了研究,利用仿真力学分析软件Analysis作为平台,对比分析了普通橡胶隔振器与液阻橡胶隔振器的性能特点,以振动加速度作为主要评价因子,选择了两款常见车型进行了对比测试。结果表明,液阻橡胶隔振器在受到不平路面激励时对衰减方向盘扭振的效果要优于普通橡胶隔振器,两种车型的振动加速度峰值分别下降了62%和28%;液阻橡胶隔振器具有更好的动刚度特性、阻尼角特性和振动加速度特性。

In order to solve the problems of the engine torque of noise and vibration road incentives of tire noise and other issues,so as to improve the Harshness（ NVH） of vehicles（ noise,vibration and harshness,noise,vibration and acoustic vibration roughness） performance,vibration isolation system was applied in automobile powertrain system and driving system. The vibration isolation system were investigated in structural differences,the platform of using simulation and mechanical analysis software（ Analysis） was established. The performance characteristics of ordinary rubber vibration isolator and fluid resistance rubber vibration isolator has carried on the comparison and analysis,two common models were used for contrast test with vibration acceleration as the main control objectives. The results show that： hydraulic rubber isolator in the uneven road surface excitation of attenuation effect of torsional vibration of the steering wheel is superior to the general rubber isolator,two models of vibration acceleration peak value decreased by 62% and 28% respectively,better dynamic stiffness and damping features angle characteristics and vibration acceleration characteristics.