Design of a quasi-zero stiffness isolation system for supporting different loads

Ye, K; Ji, JC; Brown, T

Design of a quasi-zero stiffness isolation system for supporting different loads

Ye, K

Ji, JC Brown, T

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Publisher:: ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Publication Type:: Journal Article
Citation:: Journal of Sound and Vibration, 2020, 471
Issue Date:: 2020-04-14

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Field	Value	Language
dc.contributor.author	Ye, K https://orcid.org/0000-0001-7109-2334
dc.contributor.author	Ji, JC
dc.contributor.author	Brown, T https://orcid.org/0000-0002-0155-9151
dc.date.accessioned	2020-10-16T00:17:31Z
dc.date.available	2020-10-16T00:17:31Z
dc.date.issued	2020-04-14
dc.identifier.citation	Journal of Sound and Vibration, 2020, 471
dc.identifier.issn	0022-460X
dc.identifier.issn	1095-8568
dc.identifier.uri	http://hdl.handle.net/10453/143287
dc.description.abstract	© 2020 Elsevier Ltd The quasi-zero stiffness (QZS) vibration isolation system using negative stiffness structure can generally increase the workable frequency range and improve the isolation performance, in comparison with a linear vibration isolator. However, most of the QZS isolation systems are sensitive to the loads applied for achieving effective isolation. A QZS system designed for a certain load supported cannot provide an effective vibration isolation for another load, as the designed QZS region is not suitable for the new load and thus it no longer demonstrates the anticipated isolation performance. This paper presents an optimized structure for the QZS system to adaptively respond to different loads based on a cam-roller mechanism. Innovation of the present design is the capacity of supporting multi-load levels to isolate the vibrations in low frequency range. Frictional force occurring on the cam-roller contact is considered in the modelling to represent practical application situations. Both static and dynamic responses are theoretically studied for the QZS characteristic and isolation performance. A prototype of the proposed QZS structure is designed, fabricated and tested to verify its isolation performance. Experimental results demonstrate an excellent agreement with the theoretical results, which promotes the implementation of the proposed design into engineering applications.
dc.language	English
dc.publisher	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
dc.relation	Coal services health and safety trust20651
dc.relation.ispartof	Journal of Sound and Vibration
dc.relation.isbasedon	10.1016/j.jsv.2020.115198
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 09 Engineering
dc.subject.classification	Acoustics
dc.title	Design of a quasi-zero stiffness isolation system for supporting different loads
dc.type	Journal Article
utslib.citation.volume	471
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-10-16T00:17:16Z
pubs.publication-status	Published
pubs.volume	471

Abstract:

© 2020 Elsevier Ltd The quasi-zero stiffness (QZS) vibration isolation system using negative stiffness structure can generally increase the workable frequency range and improve the isolation performance, in comparison with a linear vibration isolator. However, most of the QZS isolation systems are sensitive to the loads applied for achieving effective isolation. A QZS system designed for a certain load supported cannot provide an effective vibration isolation for another load, as the designed QZS region is not suitable for the new load and thus it no longer demonstrates the anticipated isolation performance. This paper presents an optimized structure for the QZS system to adaptively respond to different loads based on a cam-roller mechanism. Innovation of the present design is the capacity of supporting multi-load levels to isolate the vibrations in low frequency range. Frictional force occurring on the cam-roller contact is considered in the modelling to represent practical application situations. Both static and dynamic responses are theoretically studied for the QZS characteristic and isolation performance. A prototype of the proposed QZS structure is designed, fabricated and tested to verify its isolation performance. Experimental results demonstrate an excellent agreement with the theoretical results, which promotes the implementation of the proposed design into engineering applications.

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http://hdl.handle.net/10453/143287