Demonstrator to show the effects of negative stiffness on the natural frequency of a simple oscillator

被引：33

作者：

Carrella, A. ^{[1
]}

Brennan, M. J. ^{[1
]}

Waters, T. P. ^{[1
]}

机构：

[1] Univ Southampton, Inst Sound & Vibrat Res, Southampton, Hants, England

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE | 2008年 / 222卷 / 07期

关键词：

negative stiffness; low natural frequency; vibration isolation;

D O I：

10.1243/09544062JMES1012

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 [机械工程];

摘要：

This article describes a demonstrator to show the effects of negative stiffness on the free vibration of a simple oscillator. The test rig consists of a horizontal beam that is hinged at one end and is supported by two coil springs to form a single-degree-of-freedom system. Additional correction springs, which provide negative stiffness, can be attached to lower the natural frequency of the system. The effect of the change in natural frequency can be easily seen visually, and it is shown that for one of the configurations of correction springs, the natural frequency can be reduced by a factor of about 4.

引用

页码：1189 / 1192

页数：4

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