An investigation of a two-stage nonlinear vibration isolation system

被引：137

作者：

Lu, Zeqi ^{[1
]}

Brennan, Michael J. ^{[2
]}

Yang, Tiejun ^{[1
]}

Li, Xinhui ^{[1
]}

Liu, Zhigang ^{[1
]}

机构：

[1] Harbin Engn Univ, Power & Energy Engn Coll, Harbin, Peoples R China

[2] UNESP, Dept Engn Mecan, Ilha Solteira, Brazil

来源：

JOURNAL OF SOUND AND VIBRATION | 2013年 / 332卷 / 06期

基金：

中国国家自然科学基金;

关键词：

QUASI-ZERO-STIFFNESS;

D O I：

10.1016/j.jsv.2012.11.019

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper investigates the most desirable configuration of a two-stage nonlinear vibration isolation system, in which the isolators contain hardening geometric stiffness nonlinearity and linear viscous damping. The force transmissibility of the system is used as the measure of the effectiveness of the isolation system. The hardening nonlinearity is achieved by placing horizontal springs onto the suspended and intermediate masses, which are supported by vertical springs. It is found that nonlinearity in the upper stage has very little effect and thus serves little purpose. The nonlinearity in the lower stage, however, has a profound effect, and can significantly improve the effectiveness of the isolation system. Further, it is found that it is desirable to have high damping in the upper stage and very low damping in the lower stage. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1456 / 1464

页数：9

共 13 条

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