Analysis of influence of stiffness characteristics on vibration and shock isolation performance of eight-element isolator

被引：0

作者：

Gao P. ^{[1
,2
]}

Du Z. ^{[1
,2
]}

Zhang L. ^{[1
,2
]}

Yan M. ^{[1
]}

机构：

[1] School of Mechanical Engineering, Shenyang University of Technology, Shenyang

[2] Naval Research Academy, Beijing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 11期

关键词：

Anti-shock performance; Disc spring; Isolator; Quasi-zero stiffness;

D O I：

10.13465/j.cnki.jvs.2020.11.038

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In order to improve the protective capability of isolator of inertial navigation equipment, a multi-element parallel isolator was designed, which can unload impact loads in any direction by a large margin. A disc spring which can bear large loads with small deformation was selected as an elastic element. Meanwhile, quasi-static compression test, vibration test and impact test were carried out to analyze the stiffness characteristics of isolator and its influence on isolation performance.It was found that with the increase of the number of disc springs in a single spacer, the preload increases. The quasi-zero stiffness characteristic of the elastic component gradually becomes stronger, and the vertical and horizontal vibration isolation capabilities are weakened in different degrees.The shock isolation performance was studied. When the quasi-zero stiffness characteristics are more obvious, the peaks of the acceleration response obtained by the test and simulation are larger.But the isolation rate tends to be stable with the increase of the impact load.Finally, the results show that when the elastic element has weak quasi-zero stiffness characteristics, it is beneficial to ensure that the isolator keeps good vibration isolation and shock isolation ability under complex impact environment.The study provides a reference for the optimal design of multi-element parallel isolator. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：288 / 294

页数：6

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