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《Journal of Vibration and Shock》 2015-04
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Effects of subsystem parameters on natural characteristics of a double-layer vibration isolation system

CHEN Jun;YAN Bing;DONG Da-wei;LU Zhi-wen;WANG Yuan-wen;School of Mechanical Engineering,Southwest Jiaotong University;  
In order to study the effects of subsystem parameters on natural characteristics of a double-layer vibration isolation system( DLVIS), a 3-DOF dynamic model was established, and the analytical expressions of dynamic magnification factor and dimensionless natural frequencies of the system were deduced,then,the relation expressions involving the decoupling level and vibration modal shapes of the isolation system to the mass ratio and stiffness ratio of subsystems were derived. Afterwards,the effects of the mass ratio and stiffness ratio of subsystems on the DLVIS main system natural characteristics were studied. Furthermore,the effects of an air cooling subsystem's mass and stiffness on the natural characteristics of a 12-DOF main system were simulated for a DMU power pack DLVIS with multiple subsystems.The results provided a reference for design of subsystems of a double-layer vibration isolation system.
【Fund】: 牵引动力国家重点实验室基金项目-重点(2011TPL_Z02)
【CateGory Index】: TB535.1
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