Quasi-zero stiffness isolator based on bistable structures with variable cross-section

被引：8

作者：

Zhang, Zhongwen ^{[1
]}

Shi, Fenglan ^{[2
]}

Yang, Chuang ^{[2
]}

Xu, Zhao-Dong ^{[1
]}

机构：

[1] Southeast Univ, Sch Civil Engn, China Pakistan Belt & Rd Joint Lab Smart Disaster, 2 Southeast Univ RD, Nanjing 210000, Peoples R China

[2] Southeast Univ, Sch Civil Engn, Nanjing, Peoples R China

来源：

JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL | 2022年 / 41卷 / 01期

基金：

国家重点研发计划;

关键词：

Vibration control; bistable structure; negative stiffness; VIBRATION ISOLATION;

D O I：

10.1177/14613484211038404

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Simple and light-weighted quasi-zero stiffness (QZS) isolators can be designed based on nonlinear and negative stiffness generated by the snap-through effect of bistable structures. Traditionally, the snap-through force of the bistable structure is limited which makes the weight which can be isolated based on this mechanism very low. This paper investigates increasing loading capacity of this kind of isolator by using an optimized and varying sectional profile. Numerical models were derived for the bistable structures with variable sectional distributions. Optimized sections' alignment of the bistable beam was derived based on the numerical model which was consequently validated by experimental results. Influences of the bistable beams with a variable section on nonlinear stiffness characteristics and performance of the isolator were at last investigated with the harmonic balance method.

引用

页码：405 / 416

页数：12

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