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Multiharmonic Resonance Control Testing of an Internally Resonant Structure

Alexander Shaw Orcid Logo, Thomas L. Hill, Simon A. Neild, Michael Friswell

Vibration, Volume: 3, Issue: 3, Pages: 217 - 234

Swansea University Authors: Alexander Shaw Orcid Logo, Michael Friswell

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Abstract

The experimental characterisation of a nonlinear structure is a challenging process, particularly for multiple degree of freedom and continuous structures. Despite attracting much attention from academia, there is much work needed to create processes that can achieve characterisation in timescales s...

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Published in: Vibration
ISSN: 2571-631X
Published: MDPI AG 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa56236
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spelling 2021-03-01T13:52:18.0741953 v2 56236 2021-02-11 Multiharmonic Resonance Control Testing of an Internally Resonant Structure 10cb5f545bc146fba9a542a1d85f2dea 0000-0002-7521-827X Alexander Shaw Alexander Shaw true false 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 2021-02-11 AERO The experimental characterisation of a nonlinear structure is a challenging process, particularly for multiple degree of freedom and continuous structures. Despite attracting much attention from academia, there is much work needed to create processes that can achieve characterisation in timescales suitable for industry, and a key to this is the design of the testing procedure itself. This work proposes a passive testing method that seeks a desired degree of resonance between forcing and response. In this manner, the process automatically seeks data that reveals greater detail of the underlying nonlinear normal modes than a traditional stepped sine method. Furthermore, the method can target multiple harmonics of the fundamental forcing frequency, and is therefore suitable for structures with complex modal interactions. The method is presented with some experimental examples, using a structure with a 3:1 internal resonance. Journal Article Vibration 3 3 217 234 MDPI AG 2571-631X nonlinear vibration; experimental vibration; internal resonance 3 9 2020 2020-09-03 10.3390/vibration3030017 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2021-03-01T13:52:18.0741953 2021-02-11T11:32:39.2593565 College of Engineering Engineering Alexander Shaw 0000-0002-7521-827X 1 Thomas L. Hill 2 Simon A. Neild 3 Michael Friswell 4 56236__19266__e94b9f214c3547a2bdfc065f11777a0e.pdf 56236.pdf 2021-02-11T11:34:35.6184674 Output 6510036 application/pdf Version of Record true ©2020 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng http://creativecommons.org/licenses/by/4.0/
title Multiharmonic Resonance Control Testing of an Internally Resonant Structure
spellingShingle Multiharmonic Resonance Control Testing of an Internally Resonant Structure
Alexander Shaw
Michael Friswell
title_short Multiharmonic Resonance Control Testing of an Internally Resonant Structure
title_full Multiharmonic Resonance Control Testing of an Internally Resonant Structure
title_fullStr Multiharmonic Resonance Control Testing of an Internally Resonant Structure
title_full_unstemmed Multiharmonic Resonance Control Testing of an Internally Resonant Structure
title_sort Multiharmonic Resonance Control Testing of an Internally Resonant Structure
author_id_str_mv 10cb5f545bc146fba9a542a1d85f2dea
5894777b8f9c6e64bde3568d68078d40
author_id_fullname_str_mv 10cb5f545bc146fba9a542a1d85f2dea_***_Alexander Shaw
5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
author Alexander Shaw
Michael Friswell
author2 Alexander Shaw
Thomas L. Hill
Simon A. Neild
Michael Friswell
format Journal article
container_title Vibration
container_volume 3
container_issue 3
container_start_page 217
publishDate 2020
institution Swansea University
issn 2571-631X
doi_str_mv 10.3390/vibration3030017
publisher MDPI AG
college_str College of Engineering
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hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description The experimental characterisation of a nonlinear structure is a challenging process, particularly for multiple degree of freedom and continuous structures. Despite attracting much attention from academia, there is much work needed to create processes that can achieve characterisation in timescales suitable for industry, and a key to this is the design of the testing procedure itself. This work proposes a passive testing method that seeks a desired degree of resonance between forcing and response. In this manner, the process automatically seeks data that reveals greater detail of the underlying nonlinear normal modes than a traditional stepped sine method. Furthermore, the method can target multiple harmonics of the fundamental forcing frequency, and is therefore suitable for structures with complex modal interactions. The method is presented with some experimental examples, using a structure with a 3:1 internal resonance.
published_date 2020-09-03T04:11:42Z
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score 10.87922