Experimental investigation of a vibration isolation system using negative stiffness structure

被引：206

作者：

Thanh Danh Le ^{[1
]}

Ahn, Kyoung Kwan ^{[2
]}

机构：

[1] Univ Ulsan, Grad Sch Mech & Automot Engn, Ulsan, South Korea

[2] Univ Ulsan, Sch Mech Engn, Ulsan 680764, South Korea

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2013年 / 70卷

关键词：

Negative stiffness; Vibration isolation; Low nonlinear stiffness; Random excitation; DESIGN; SPRINGS;

D O I：

10.1016/j.ijmecsci.2013.02.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The purpose of this study is to investigate and propose a vibration isolation system with a negative stiffness structure (NSS) for driver seats in low frequency vibration conditions. In this paper, the nonlinear stiffness characteristic of the system is presented. The relationship between the configurative parameters and the stiffness of the elastic element, for which the dimensionless nonlinear stiffness of the proposed system ranges from zero to one and the range of the displacement of the isolation equipment (mass) is the maximum without exceeding a desired value of stiffness, will be obtained. An experimental apparatus is subsequently configured to examine the characteristic of the vibration transmissibility of the system according to various values of the configurative parameters. Next, the time responses to the multiple frequency and random base excitations are also investigated. In addition, the dynamic responses of the system with and without the negative stiffness structure are considered. The results show that the proposed system has a wide frequency range of isolation, especially since the resonance phenomenon almost does not occur. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：99 / 112

页数：14

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