卡车驾驶室准零刚度悬置系统设计研究

Research on Quasi-zero Stiffness Mount of Truck Cab

针对卡车行驶过程中驾驶室低频振动问题,结合轻卡驾驶室悬置的特点,设计出一种准零刚度悬置系统。通过对这种准零刚度悬置系统进行静力学分析,推导出其力-位移特性关系和刚度-位移特性关系,并得到这种悬置系统在平衡位置满足准零刚度特性的前提条件,通过其特性关系,可知这种悬置系统具有低频隔振性能。最后针对实车振动问题,设计出准零刚度悬置系统,对比优化前后驾驶室后悬置主、被动端振动大小,可知这种准零刚度悬置系统具有很好的低频隔振效果。

To solve the problem of low frequency vibration of cab during truck driving,a quasi-zero stiffness mount system is designed.Based on the mount system,the force displacement character and the stiffness displacement character are derived,and the precondition of the mount system at the equilibrium position is obtained.Through the characters,it is known that the mount system has low-frequency vibration isolation performance.Finally,to solve the vibration problem of truck,a quasi-zero stiffness mounting system is designed.By comparing the vibration of the active and passive mount before and after optimization,it can be seen that the quasi-zero stiffness mount system has good low-frequency vibration isolation effect.