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Frictional phenomena within a quasi zero stiffness vibration device

Alexander Shaw Orcid Logo, G. Gatti Orcid Logo, P.J.P. Gonçalves Orcid Logo, B. Tang Orcid Logo, M.J. Brennan

Mechanical Systems and Signal Processing, Volume: 211, Start page: 111113

Swansea University Author: Alexander Shaw Orcid Logo

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DOI (Published version): 10.1016/j.ymssp.2024.111113

Abstract

Quasi Zero Stiffness (QZS) devices have received widespread interest due to their potential applications in vibration isolation and as nonlinear energy sinks. However, as the stiffness is driven towards zero, the response becomes dominated by the effects of damping and friction. This places a strong...

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Published in: Mechanical Systems and Signal Processing
ISSN: 0888-3270
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa65411
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spelling v2 65411 2024-01-05 Frictional phenomena within a quasi zero stiffness vibration device 10cb5f545bc146fba9a542a1d85f2dea 0000-0002-7521-827X Alexander Shaw Alexander Shaw true false 2024-01-05 ACEM Quasi Zero Stiffness (QZS) devices have received widespread interest due to their potential applications in vibration isolation and as nonlinear energy sinks. However, as the stiffness is driven towards zero, the response becomes dominated by the effects of damping and friction. This places a strong emphasis on accurate modelling of these effects if realistic results are to be achieved. This work analyses and experimentally demonstrates the complex responses that can occur in a frictional QZS device, including isolated response regions and non-sinusoidal responses. This is done using a simple device recently developed by the authors that allows accurate adjustment of the nonlinear force–displacement curve. Furthermore, high frequency disturbances on the frictional system are shown to introduce a damping effect on the low frequency behaviour, and an equivalent linear damping coefficient is derived. Journal Article Mechanical Systems and Signal Processing 211 111113 Elsevier BV 0888-3270 Quasi Zero Stiffness; Isolation; Friction; Isola; Nonlinear vibration 1 4 2024 2024-04-01 10.1016/j.ymssp.2024.111113 Data availability:Data used in this work may be found at https://doi.org/10.5281/zenodo.10340200. COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University SU Library paid the OA fee (TA Institutional Deal) This work was supported by the Royal Academy of Engineering, United Kingdom under the Distinguished Visiting Fellowships - Round 6, and also by EPSRC, United Kingdom grant EP/R006768/1 ‘Digital twins for improved dynamic design’. Data used in this work may be found at https://doi.org/10.5281/zenodo.10340200. 2024-05-31T13:27:25.8147299 2024-01-05T07:31:23.8934137 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Alexander Shaw 0000-0002-7521-827X 1 G. Gatti 0000-0001-6390-8073 2 P.J.P. Gonçalves 0000-0001-7983-5665 3 B. Tang 0000-0002-4882-6659 4 M.J. Brennan 5 65411__29787__644379dd5adc4c4a8bd5ffceb2bdf543.pdf 65411_VoR.pdf 2024-03-21T14:58:22.0196230 Output 2848733 application/pdf Version of Record true © 2024 The Author(s). This is an open access article under the CC BY license. true eng http://creativecommons.org/licenses/by/4.0/
title Frictional phenomena within a quasi zero stiffness vibration device
spellingShingle Frictional phenomena within a quasi zero stiffness vibration device
Alexander Shaw
title_short Frictional phenomena within a quasi zero stiffness vibration device
title_full Frictional phenomena within a quasi zero stiffness vibration device
title_fullStr Frictional phenomena within a quasi zero stiffness vibration device
title_full_unstemmed Frictional phenomena within a quasi zero stiffness vibration device
title_sort Frictional phenomena within a quasi zero stiffness vibration device
author_id_str_mv 10cb5f545bc146fba9a542a1d85f2dea
author_id_fullname_str_mv 10cb5f545bc146fba9a542a1d85f2dea_***_Alexander Shaw
author Alexander Shaw
author2 Alexander Shaw
G. Gatti
P.J.P. Gonçalves
B. Tang
M.J. Brennan
format Journal article
container_title Mechanical Systems and Signal Processing
container_volume 211
container_start_page 111113
publishDate 2024
institution Swansea University
issn 0888-3270
doi_str_mv 10.1016/j.ymssp.2024.111113
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
document_store_str 1
active_str 0
description Quasi Zero Stiffness (QZS) devices have received widespread interest due to their potential applications in vibration isolation and as nonlinear energy sinks. However, as the stiffness is driven towards zero, the response becomes dominated by the effects of damping and friction. This places a strong emphasis on accurate modelling of these effects if realistic results are to be achieved. This work analyses and experimentally demonstrates the complex responses that can occur in a frictional QZS device, including isolated response regions and non-sinusoidal responses. This is done using a simple device recently developed by the authors that allows accurate adjustment of the nonlinear force–displacement curve. Furthermore, high frequency disturbances on the frictional system are shown to introduce a damping effect on the low frequency behaviour, and an equivalent linear damping coefficient is derived.
published_date 2024-04-01T13:27:24Z
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score 11.017016

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