A Stable Adjustable Nonlinear Energy Sink

Zeng, YC; Ding, H; Ji, J

A Stable Adjustable Nonlinear Energy Sink

Zeng, YC Ding, H Ji, J

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Publisher:: Springer Nature
Publication Type:: Conference Proceeding
Citation:: Lecture Notes in Electrical Engineering, 2024, 1152, pp. 661-676
Issue Date:: 2024-01-01

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Field	Value	Language
dc.contributor.author	Zeng, YC
dc.contributor.author	Ding, H
dc.contributor.author	Ji, J https://orcid.org/0000-0003-3280-5463
dc.date.accessioned	2025-02-04T01:23:10Z
dc.date.available	2025-02-04T01:23:10Z
dc.date.issued	2024-01-01
dc.identifier.citation	Lecture Notes in Electrical Engineering, 2024, 1152, pp. 661-676
dc.identifier.isbn	9789819705535
dc.identifier.issn	1876-1100
dc.identifier.issn	1876-1119
dc.identifier.uri	http://hdl.handle.net/10453/184913
dc.description.abstract	The nonlinear energy sink (NES) is very sensitive to external excitation intensity, which seriously hinders the application of NES in engineering practice. In this paper, a stable adjustable NES model is proposed, which is consisted of a pair of axially compressed clamped beams, guide rods, mass blocks, and flexible hinges. By adjusting the length of the guide rod, the distance of the clamped beams, and the geometric relationship between the buckling deflection, it is convenient to convert between three different types of NES: monostable, bistable, and tristable. The Lagrange equation is used to derive the dynamic equation of the system, and the approximate analytical solution is obtained by using the harmonic balance method, which is then mutually verified with the numerical solution. Through theoretical calculation and experimental verification, three different types of NES dynamic responses and vibration reduction mechanisms are studied under different excitation intensities. The results show that NES can achieve good vibration reduction effects by strong modulation response (SMR) under appropriate excitation amplitudes; Bistable NES can reduce the energy threshold of NES and effectively suppress small amplitude vibrations by performing chaotic inter well oscillations. The tristable NES can perform chaotic inter well oscillations and eliminate detached resonance curve, which has a good vibration suppression effect on large vibrations. The device proposed in this paper can conveniently adjust the type of NES based on different external excitation intensities, providing a way to address the sensitive issue of excitation intensity in engineering applications of NES.
dc.language	en
dc.publisher	Springer Nature
dc.relation.ispartof	Lecture Notes in Electrical Engineering
dc.relation.ispartofseries	Lecture Notes in Electrical Engineering
dc.relation.isbasedon	10.1007/978-981-97-0554-2_50
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A Stable Adjustable Nonlinear Energy Sink
dc.type	Conference Proceeding
utslib.citation.volume	1152
pubs.organisational-group	University of Technology Sydney
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/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Transport Research Centre (TRC)
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Audio, Acoustics and Vibration (CAAV)
pubs.organisational-group	University of Technology Sydney/UTS Groups/Transport Research Centre (TRC)/Transport Research Centre (TRC) Associate Members
utslib.copyright.status	closed_access	*
dc.date.updated	2025-02-04T01:23:09Z
pubs.publication-status	Published
pubs.volume	1152

Abstract:

The nonlinear energy sink (NES) is very sensitive to external excitation intensity, which seriously hinders the application of NES in engineering practice. In this paper, a stable adjustable NES model is proposed, which is consisted of a pair of axially compressed clamped beams, guide rods, mass blocks, and flexible hinges. By adjusting the length of the guide rod, the distance of the clamped beams, and the geometric relationship between the buckling deflection, it is convenient to convert between three different types of NES: monostable, bistable, and tristable. The Lagrange equation is used to derive the dynamic equation of the system, and the approximate analytical solution is obtained by using the harmonic balance method, which is then mutually verified with the numerical solution. Through theoretical calculation and experimental verification, three different types of NES dynamic responses and vibration reduction mechanisms are studied under different excitation intensities. The results show that NES can achieve good vibration reduction effects by strong modulation response (SMR) under appropriate excitation amplitudes; Bistable NES can reduce the energy threshold of NES and effectively suppress small amplitude vibrations by performing chaotic inter well oscillations. The tristable NES can perform chaotic inter well oscillations and eliminate detached resonance curve, which has a good vibration suppression effect on large vibrations. The device proposed in this paper can conveniently adjust the type of NES based on different external excitation intensities, providing a way to address the sensitive issue of excitation intensity in engineering applications of NES.

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http://hdl.handle.net/10453/184913