A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation

A novel shock absorber with the preload structure and global negative stiffness is proposed for the shock isolation of sensitive systems. The novel shock absorber is composed of a linear spring and permanent magnet sets. The preload force and negative stiffness region are related to the attractive f...

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Main Authors: Zecui Zeng, Lei Zhang, Ming Yan
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2021/8823422
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author Zecui Zeng
Lei Zhang
Ming Yan
author_facet Zecui Zeng
Lei Zhang
Ming Yan
author_sort Zecui Zeng
collection DOAJ
description A novel shock absorber with the preload structure and global negative stiffness is proposed for the shock isolation of sensitive systems. The novel shock absorber is composed of a linear spring and permanent magnet sets. The preload force and negative stiffness region are related to the attractive force between permanent magnet sets. The aim of this paper is to investigate the shock isolation performance of the novel shock absorber. Firstly, a static analysis of the novel shock absorber is carried out. Secondly, the motion stability of the NSA is analyzed by the Jacobian Matrix and the shock response is calculated numerically compared with the conventional preload structures. Finally, the shock test of the novel shock absorber is completed to verify the above results. It is found that the novel shock absorber could be advantageous in improving shock isolation in terms of relative displacement and absolute acceleration compared with conventional preload structures.
format Article
id doaj-art-71f6ccf218384ebcac01ea02d47c2850
institution Kabale University
issn 1070-9622
1875-9203
language English
publishDate 2021-01-01
publisher Wiley
record_format Article
series Shock and Vibration
spelling doaj-art-71f6ccf218384ebcac01ea02d47c28502025-02-03T01:31:22ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/88234228823422A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock IsolationZecui Zeng0Lei Zhang1Ming Yan2School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaSchool of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaSchool of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, ChinaA novel shock absorber with the preload structure and global negative stiffness is proposed for the shock isolation of sensitive systems. The novel shock absorber is composed of a linear spring and permanent magnet sets. The preload force and negative stiffness region are related to the attractive force between permanent magnet sets. The aim of this paper is to investigate the shock isolation performance of the novel shock absorber. Firstly, a static analysis of the novel shock absorber is carried out. Secondly, the motion stability of the NSA is analyzed by the Jacobian Matrix and the shock response is calculated numerically compared with the conventional preload structures. Finally, the shock test of the novel shock absorber is completed to verify the above results. It is found that the novel shock absorber could be advantageous in improving shock isolation in terms of relative displacement and absolute acceleration compared with conventional preload structures.http://dx.doi.org/10.1155/2021/8823422
spellingShingle Zecui Zeng
Lei Zhang
Ming Yan
A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
Shock and Vibration
title A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
title_full A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
title_fullStr A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
title_full_unstemmed A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
title_short A Novel Shock Absorber with the Preload and Global Negative Stiffness for Effective Shock Isolation
title_sort novel shock absorber with the preload and global negative stiffness for effective shock isolation
url http://dx.doi.org/10.1155/2021/8823422
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