Theoretical model and vibration isolation characteristics of a lever-type vibration isolator

被引：0
|
作者：
Wang Z. [1 ]
Pan X. [1 ]
Wu C. [1 ]
Yan B. [1 ]
机构：
[1] School of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 14期
关键词：
lever ratio; lever-type vibration isolator; transmissibility; vibration isolation;
D O I：
10.13465/j.cnki.jvs.2022.14.020
中图分类号：
学科分类号：
摘要：
A novel lever-type vibration isolator consisting of a lever substructure and a mass-spring-damper unit was proposed to improve the vibration isolation performance by adjusting the lever ratio. A theoretical model was established. The differential equations of motion of the vibration isolator were obtained according to the Lagrange equation. The expression of displacement transmissibility was derived. A prototype of the lever-type vibration isolator was developed. The effects of the free-end mass of the lever, the lever ratio and the nonlinear damping on the vibration isolation performance and bandwidth of the lever-type vibration isolator were analyzed numerically and experimentally. The results demonstrate the mass at the free-end of the lever can improve the vibration isolation performance and the vibration isolation bandwidth. The vibration isolation performance can be conveniently improved by adjusting the lever ratio. The transmissibility of the vibration isolator can be decreased effectively by increasing the damping. The study has certain guiding significance for the design and application of lever-type vibration isolators. © 2022 Chinese Vibration Engineering Society. All rights reserved.
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页码：145 / 150and225
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