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Experimental Study of Rotor-Stator Contact Cycles

Elijah Chipato, Alexander Shaw Orcid Logo, Michael Friswell, Rafael Sanchez Crespo

Journal of Sound and Vibration, Volume: 502

Swansea University Authors: Elijah Chipato, Alexander Shaw Orcid Logo, Michael Friswell, Rafael Sanchez Crespo

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Abstract

A rotor can contact a stator thereby inducing some very strong non-linearities that can result in a plethora of vibration phenomena. Synchronous motions, chaotic motion, backward whirl, forward whirl are some of the reported phenomena in the literature. This article presents an experimental approach...

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Published in: Journal of Sound and Vibration
ISSN: 0022-460X
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56551
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spelling 2022-10-31T18:52:18.1169651 v2 56551 2021-03-25 Experimental Study of Rotor-Stator Contact Cycles e94c235327abd4da98a6407a1d924ad8 Elijah Chipato Elijah Chipato true false 10cb5f545bc146fba9a542a1d85f2dea 0000-0002-7521-827X Alexander Shaw Alexander Shaw true false 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false c09e4d32161ca5f2ad60bce7f18efb6c Rafael Sanchez Crespo Rafael Sanchez Crespo true false 2021-03-25 FGSEN A rotor can contact a stator thereby inducing some very strong non-linearities that can result in a plethora of vibration phenomena. Synchronous motions, chaotic motion, backward whirl, forward whirl are some of the reported phenomena in the literature. This article presents an experimental approach based on a very flexible rotor rig designed with drill string dynamics in mind for rotordynamic experiments. A non-contact technique was used for data acquisition using a consumer-grade Go-Pro Hero 6 Black camera which captures a series of images(video) which are then post-processed using MATLAB’s image processing toolbox to understand the nature of dynamics involved. A mathematical model of the experimental rig was used for comparison with the actual experiment to assess the effectiveness of the data acquisition procedure used and validity of the model. The model is able to a good extent to reproduce the behaviour of the test rig. The fundamental phenomena exhibited by the system is analysed and discussed based on bifurcation plots, spectral intensity plots and orbit plots visualised in both rotating and stationary frame. Journal Article Journal of Sound and Vibration 502 Elsevier BV 0022-460X Nonlinear, Rotordynamics, Periodic contacts, Backward whirl, Video 23 6 2021 2021-06-23 10.1016/j.jsv.2021.116097 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2022-10-31T18:52:18.1169651 2021-03-25T12:36:21.5889829 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Elijah Chipato 1 Alexander Shaw 0000-0002-7521-827X 2 Michael Friswell 3 Rafael Sanchez Crespo 4 56551__19556__71f16252e809469689dfa6278fd7383e.pdf 56551.pdf 2021-03-25T12:38:03.9243351 Output 7668023 application/pdf Accepted Manuscript true 2022-03-23T00:00:00.0000000 ©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 http://creativecommons.org/licenses/by-nc-nd/4.0/
title Experimental Study of Rotor-Stator Contact Cycles
spellingShingle Experimental Study of Rotor-Stator Contact Cycles
Elijah Chipato
Alexander Shaw
Michael Friswell
Rafael Sanchez Crespo
title_short Experimental Study of Rotor-Stator Contact Cycles
title_full Experimental Study of Rotor-Stator Contact Cycles
title_fullStr Experimental Study of Rotor-Stator Contact Cycles
title_full_unstemmed Experimental Study of Rotor-Stator Contact Cycles
title_sort Experimental Study of Rotor-Stator Contact Cycles
author_id_str_mv e94c235327abd4da98a6407a1d924ad8
10cb5f545bc146fba9a542a1d85f2dea
5894777b8f9c6e64bde3568d68078d40
c09e4d32161ca5f2ad60bce7f18efb6c
author_id_fullname_str_mv e94c235327abd4da98a6407a1d924ad8_***_Elijah Chipato
10cb5f545bc146fba9a542a1d85f2dea_***_Alexander Shaw
5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
c09e4d32161ca5f2ad60bce7f18efb6c_***_Rafael Sanchez Crespo
author Elijah Chipato
Alexander Shaw
Michael Friswell
Rafael Sanchez Crespo
author2 Elijah Chipato
Alexander Shaw
Michael Friswell
Rafael Sanchez Crespo
format Journal article
container_title Journal of Sound and Vibration
container_volume 502
publishDate 2021
institution Swansea University
issn 0022-460X
doi_str_mv 10.1016/j.jsv.2021.116097
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description A rotor can contact a stator thereby inducing some very strong non-linearities that can result in a plethora of vibration phenomena. Synchronous motions, chaotic motion, backward whirl, forward whirl are some of the reported phenomena in the literature. This article presents an experimental approach based on a very flexible rotor rig designed with drill string dynamics in mind for rotordynamic experiments. A non-contact technique was used for data acquisition using a consumer-grade Go-Pro Hero 6 Black camera which captures a series of images(video) which are then post-processed using MATLAB’s image processing toolbox to understand the nature of dynamics involved. A mathematical model of the experimental rig was used for comparison with the actual experiment to assess the effectiveness of the data acquisition procedure used and validity of the model. The model is able to a good extent to reproduce the behaviour of the test rig. The fundamental phenomena exhibited by the system is analysed and discussed based on bifurcation plots, spectral intensity plots and orbit plots visualised in both rotating and stationary frame.
published_date 2021-06-23T04:07:59Z
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