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On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper
Mechanical Systems and Signal Processing, Volume: 164, Start page: 108258
Swansea University Author:
Alexander Shaw
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©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND)
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DOI (Published version): 10.1016/j.ymssp.2021.108258
Abstract
A translational Lanchester damper is a device that adds damping to a structure at a point using a series combination of a viscous damper and a mass. The problem in the practical realisation of such a device is that a stiffness is required to support the mass, which changes the dynamic behaviour of t...
Published in: | Mechanical Systems and Signal Processing |
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ISSN: | 0888-3270 |
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Elsevier BV
2022
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URI: | https://cronfa.swan.ac.uk/Record/cronfa57555 |
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2022-10-31T18:58:26.6634366 v2 57555 2021-08-09 On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper 10cb5f545bc146fba9a542a1d85f2dea 0000-0002-7521-827X Alexander Shaw Alexander Shaw true false 2021-08-09 AERO A translational Lanchester damper is a device that adds damping to a structure at a point using a series combination of a viscous damper and a mass. The problem in the practical realisation of such a device is that a stiffness is required to support the mass, which changes the dynamic behaviour of the device, introducing a resonance frequency due to the interaction of the stiffness and inertia forces. This is a dynamic vibration absorber. To achieve a device that behaves broadly as a Lanchester damper rather than a dynamic vibration absorber, a very low stiffness is required, and this is the focus of this paper. The low stiffness is realised using a combination of linear springs and rigid links arranged with specific geometry into a compact device. Although the geometric configuration of the components leads to an inherently nonlinear device, the aim is to limit its working condition and exploit the linear-like behaviour. To this end, how the geometry affects the nonlinear behaviour is studied in detail, providing general guidelines for its design. A prototype Lanchester damper incorporating the low stiffness element was manufactured and tested on a single mode and two multi-modal vibrating structures. Journal Article Mechanical Systems and Signal Processing 164 108258 Elsevier BV 0888-3270 Vibration absorber, Vibration neutraliser, Vibration isolator, Nonlinear energy sink, Essentially nonlinear stiffness, High-static-low-dynamic-stiffness, Passive vibration control 1 2 2022 2022-02-01 10.1016/j.ymssp.2021.108258 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2022-10-31T18:58:26.6634366 2021-08-09T10:01:28.0475659 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering G. Gatti 1 Alexander Shaw 0000-0002-7521-827X 2 P.J.P. Gonçalves 3 M.J. Brennan 4 57555__20577__5c92261642244c03805c8d00c51f3006.pdf 57555.pdf 2021-08-09T10:32:46.3330485 Output 1443609 application/pdf Accepted Manuscript true 2022-08-06T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng https://creativecommons.org/licenses/by-nc-nd/4.0/ |
title |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
spellingShingle |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper Alexander Shaw |
title_short |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
title_full |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
title_fullStr |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
title_full_unstemmed |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
title_sort |
On the detailed design of a quasi-zero stiffness device to assist in the realisation of a translational Lanchester damper |
author_id_str_mv |
10cb5f545bc146fba9a542a1d85f2dea |
author_id_fullname_str_mv |
10cb5f545bc146fba9a542a1d85f2dea_***_Alexander Shaw |
author |
Alexander Shaw |
author2 |
G. Gatti Alexander Shaw P.J.P. Gonçalves M.J. Brennan |
format |
Journal article |
container_title |
Mechanical Systems and Signal Processing |
container_volume |
164 |
container_start_page |
108258 |
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2022 |
institution |
Swansea University |
issn |
0888-3270 |
doi_str_mv |
10.1016/j.ymssp.2021.108258 |
publisher |
Elsevier BV |
college_str |
Faculty of Science and Engineering |
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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 |
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description |
A translational Lanchester damper is a device that adds damping to a structure at a point using a series combination of a viscous damper and a mass. The problem in the practical realisation of such a device is that a stiffness is required to support the mass, which changes the dynamic behaviour of the device, introducing a resonance frequency due to the interaction of the stiffness and inertia forces. This is a dynamic vibration absorber. To achieve a device that behaves broadly as a Lanchester damper rather than a dynamic vibration absorber, a very low stiffness is required, and this is the focus of this paper. The low stiffness is realised using a combination of linear springs and rigid links arranged with specific geometry into a compact device. Although the geometric configuration of the components leads to an inherently nonlinear device, the aim is to limit its working condition and exploit the linear-like behaviour. To this end, how the geometry affects the nonlinear behaviour is studied in detail, providing general guidelines for its design. A prototype Lanchester damper incorporating the low stiffness element was manufactured and tested on a single mode and two multi-modal vibrating structures. |
published_date |
2022-02-01T04:13:23Z |
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1763753909216608256 |
score |
11.021648 |