子系统参数对双层隔振系统固有特性的影响

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (4) : 110-116.

论文

子系统参数对双层隔振系统固有特性的影响

陈俊，闫兵，董大伟，鲁志文，王媛文

作者信息 +

Effect of subsystem parameters on the natural characteristics of double-layer vibration isolation system

CHEN Jun, YAN Bing, DONG Da-wei, LU Zhi-wen, WANG Yuan-wen

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文章历史 +

摘要

为了研究子系统参数对双层隔振主系统固有特性的影响规律，将系统抽象为3自由度动力学模型，推导了系统动力放大系数（振幅比）和无量纲固有频率（固有频率比）解析式以及振型和解耦度与子系统质量比和刚度比的关系式，进而研究了子系统质量比和固有频率比对双层隔振主系统固有特性（固有频率、解耦度）的影响规律。在此基础上，针对含多个子系统的内燃动车动力包双层隔振系统，仿真计算了空冷子系统的质量和刚度对双层隔振12自由度主系统固有特性的影响规律。研究结果对双层隔振系统子系统的设计具有指导意义。

Abstract

In order to study the effect of subsystem parameters on the natural characteristics of double-layer vibration isolation system（DLVIS）, a 3 DOF dynamic model was established, and the analytic expression of dynamic magnification factors and dimensionless natural frequency of the system were deduced ，then the expressions between the decoupling degree and vibration modal of the isolation system and the mass ratio and stiffness ratio of subsystem were obtained. Afterwards, the law of DLVIS main system natural characteristics affected by mass ratio and stiffness ratio of subsystem was studied. On this basis, the influence law of natural characteristics of 12-degree main system affected by the air cooling subsystem’s mass and stiffness for DMU powerpack DLVIS with multiple subsystems were simulated. The results have guiding significance for design of subsystem of double-layer vibration isolation system.

导出引用

陈俊;闫兵;董大伟;鲁志文;王媛文. 子系统参数对双层隔振系统固有特性的影响[J]. 振动与冲击, 2015, 34(4): 110-116

CHEN Jun;YAN Bing;DONG Da-wei;LU Zhi-wen;WANG Yuan-wen. Effect of subsystem parameters on the natural characteristics of double-layer vibration isolation system[J]. Journal of Vibration and Shock, 2015, 34(4): 110-116