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Dynamic similarity design method for an aero-engine dualrotor test rig

H Miao, C Zang, M I Friswell, Michael Friswell

Journal of Physics: Conference Series, Volume: 744, Start page: 012109

Swansea University Author: Michael Friswell

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DOI (Published version): 10.1088/1742-6596/744/1/012109

Abstract

This paper presents a dynamic similarity design method to design a scale dynamic similarity model (DSM) for a dual-rotor test rig of an aero-engine. Such a test rig is usually used to investigate the major dynamic characteristics of the full-size model (FSM) and to reduce the testing cost and time f...

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Published in: Journal of Physics: Conference Series
ISSN: 1742-6588 1742-6596
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa31237
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spelling 2019-08-06T16:20:56.4328546 v2 31237 2016-11-25 Dynamic similarity design method for an aero-engine dualrotor test rig 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 2016-11-25 FGSEN This paper presents a dynamic similarity design method to design a scale dynamic similarity model (DSM) for a dual-rotor test rig of an aero-engine. Such a test rig is usually used to investigate the major dynamic characteristics of the full-size model (FSM) and to reduce the testing cost and time for experiments on practical aero engine structures. Firstly, the dynamic equivalent model (DEM) of a dual-rotor system is modelled based on its FSM using parametric modelling, and the first 10 frequencies and mode shapes of the DEM are updated to agree with the FSM by modifying the geometrical shapes of the DEM. Then, the scaling laws for the relative parameters (such as geometry sizes of the rotors, stiffness of the supports, inherent properties) between the DEM and its scale DSM were derived from their equations of motion, and the scaling factors of the above-mentioned parameters are determined by the theory of dimensional analyses. After that, the corresponding parameters of the scale DSM of the dual-rotor test rig can be determined by using the scaling factors. In addition, the scale DSM is further updated by considering the coupling effect between the disks and shafts. Finally, critical speed and unbalance response analysis of the FSM and the updated scale DSM are performed to validate the proposed method. Journal Article Journal of Physics: Conference Series 744 012109 1742-6588 1742-6596 3 10 2016 2016-10-03 10.1088/1742-6596/744/1/012109 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-08-06T16:20:56.4328546 2016-11-25T09:41:15.4389308 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised H Miao 1 C Zang 2 M I Friswell 3 Michael Friswell 4 0031237-25112016094235.pdf miao2016.pdf 2016-11-25T09:42:35.0470000 Output 1448142 application/pdf Version of Record true 2016-11-25T00:00:00.0000000 true
title Dynamic similarity design method for an aero-engine dualrotor test rig
spellingShingle Dynamic similarity design method for an aero-engine dualrotor test rig
Michael Friswell
title_short Dynamic similarity design method for an aero-engine dualrotor test rig
title_full Dynamic similarity design method for an aero-engine dualrotor test rig
title_fullStr Dynamic similarity design method for an aero-engine dualrotor test rig
title_full_unstemmed Dynamic similarity design method for an aero-engine dualrotor test rig
title_sort Dynamic similarity design method for an aero-engine dualrotor test rig
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
author Michael Friswell
author2 H Miao
C Zang
M I Friswell
Michael Friswell
format Journal article
container_title Journal of Physics: Conference Series
container_volume 744
container_start_page 012109
publishDate 2016
institution Swansea University
issn 1742-6588
1742-6596
doi_str_mv 10.1088/1742-6596/744/1/012109
college_str Faculty of Science and Engineering
hierarchytype
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 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 This paper presents a dynamic similarity design method to design a scale dynamic similarity model (DSM) for a dual-rotor test rig of an aero-engine. Such a test rig is usually used to investigate the major dynamic characteristics of the full-size model (FSM) and to reduce the testing cost and time for experiments on practical aero engine structures. Firstly, the dynamic equivalent model (DEM) of a dual-rotor system is modelled based on its FSM using parametric modelling, and the first 10 frequencies and mode shapes of the DEM are updated to agree with the FSM by modifying the geometrical shapes of the DEM. Then, the scaling laws for the relative parameters (such as geometry sizes of the rotors, stiffness of the supports, inherent properties) between the DEM and its scale DSM were derived from their equations of motion, and the scaling factors of the above-mentioned parameters are determined by the theory of dimensional analyses. After that, the corresponding parameters of the scale DSM of the dual-rotor test rig can be determined by using the scaling factors. In addition, the scale DSM is further updated by considering the coupling effect between the disks and shafts. Finally, critical speed and unbalance response analysis of the FSM and the updated scale DSM are performed to validate the proposed method.
published_date 2016-10-03T03:38:08Z
_version_ 1763751691582177280
score 11.012678

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