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An equivalent model of a nonlinear bolted flange joint / Nidhal Jamia, H. Jalali, Javad Taghipour, Michael Friswell, Hamed Haddad Khodaparast

Mechanical Systems and Signal Processing, Volume: 153, Start page: 107507

Swansea University Authors: Nidhal Jamia, Javad Taghipour, Michael Friswell, Hamed Haddad Khodaparast

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Abstract

The dynamic response of individual components in an assembled structure shows high accuracy compared to experimental measurements of the system response. However, when it comes to assemblies, the conventional linear approaches fail to deliver good accuracy, due to the uncertain linear and nonlinear...

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Published in: Mechanical Systems and Signal Processing
ISSN: 0888-3270
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa55840
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However, when it comes to assemblies, the conventional linear approaches fail to deliver good accuracy, due to the uncertain linear and nonlinear mechanisms in the contact interface of the joints. Therefore, the inherent dynamics of the contact interfaces needs to be considered in modeling assembled structures. In this paper the prediction of the nonlinear dynamic response in a bolted flange joint was obtained in two ways. First, a 3D detailed finite element model capable of representing the micro-slip mechanism was made using a quasi-static time stepping analysis. The linear characteristics and nonlinear mechanisms developing in the contact interface of a bolted joint are investigated by using the 3D detailed model. Moreover, the natural frequencies of the assembled structure (representing the linear response) and the micro-slip behavior in terms of hysteresis loops (representing the nonlinear response) are obtained using the detailed model. Second, an equivalent model composed of beam elements and an appropriate joint model is then constructed for the assembled structure. An identification approach is proposed, and the parameters of the joint model are identified using both linear and nonlinear characteristics, i.e. natural frequencies and hysteresis loops. 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spelling 2021-01-25T17:03:03.3717471 v2 55840 2020-12-07 An equivalent model of a nonlinear bolted flange joint 846b2cd3a7717b296654010df30cb22a 0000-0003-0643-7812 Nidhal Jamia Nidhal Jamia true false dc7cba835218dde37fe7f447962d4058 Javad Taghipour Javad Taghipour true false 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2020-12-07 AERO The dynamic response of individual components in an assembled structure shows high accuracy compared to experimental measurements of the system response. However, when it comes to assemblies, the conventional linear approaches fail to deliver good accuracy, due to the uncertain linear and nonlinear mechanisms in the contact interface of the joints. Therefore, the inherent dynamics of the contact interfaces needs to be considered in modeling assembled structures. In this paper the prediction of the nonlinear dynamic response in a bolted flange joint was obtained in two ways. First, a 3D detailed finite element model capable of representing the micro-slip mechanism was made using a quasi-static time stepping analysis. The linear characteristics and nonlinear mechanisms developing in the contact interface of a bolted joint are investigated by using the 3D detailed model. Moreover, the natural frequencies of the assembled structure (representing the linear response) and the micro-slip behavior in terms of hysteresis loops (representing the nonlinear response) are obtained using the detailed model. Second, an equivalent model composed of beam elements and an appropriate joint model is then constructed for the assembled structure. An identification approach is proposed, and the parameters of the joint model are identified using both linear and nonlinear characteristics, i.e. natural frequencies and hysteresis loops. Comparing the hysteresis loops obtained from the detailed and equivalent models verifies the accuracy of the joint model used to represent the contact interface and the identification approach proposed for parameter quantification. Journal Article Mechanical Systems and Signal Processing 153 107507 Elsevier BV 0888-3270 Bolted flange, Nonlinear analysis, Detailed model, Equivalent model 15 5 2021 2021-05-15 10.1016/j.ymssp.2020.107507 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University UKRI, EP/R006768/1 2021-01-25T17:03:03.3717471 2020-12-07T11:09:45.0212973 College of Engineering Engineering Nidhal Jamia 0000-0003-0643-7812 1 H. Jalali 2 Javad Taghipour 3 Michael Friswell 4 Hamed Haddad Khodaparast 0000-0002-3721-4980 5 55840__18901__77a49f1e2e3e44a8beddf71b37ba5627.pdf 55840.pdf 2020-12-17T09:48:15.7104468 Output 4408721 application/pdf Version of Record true © 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 4.0 (CC BY) License true eng http://creativecommons.org/licenses/by/4.0/
title An equivalent model of a nonlinear bolted flange joint
spellingShingle An equivalent model of a nonlinear bolted flange joint
Nidhal, Jamia
Javad, Taghipour
Michael, Friswell
Hamed, Haddad Khodaparast
title_short An equivalent model of a nonlinear bolted flange joint
title_full An equivalent model of a nonlinear bolted flange joint
title_fullStr An equivalent model of a nonlinear bolted flange joint
title_full_unstemmed An equivalent model of a nonlinear bolted flange joint
title_sort An equivalent model of a nonlinear bolted flange joint
author_id_str_mv 846b2cd3a7717b296654010df30cb22a
dc7cba835218dde37fe7f447962d4058
5894777b8f9c6e64bde3568d68078d40
f207b17edda9c4c3ea074cbb7555efc1
author_id_fullname_str_mv 846b2cd3a7717b296654010df30cb22a_***_Nidhal, Jamia
dc7cba835218dde37fe7f447962d4058_***_Javad, Taghipour
5894777b8f9c6e64bde3568d68078d40_***_Michael, Friswell
f207b17edda9c4c3ea074cbb7555efc1_***_Hamed, Haddad Khodaparast
author Nidhal, Jamia
Javad, Taghipour
Michael, Friswell
Hamed, Haddad Khodaparast
author2 Nidhal Jamia
H. Jalali
Javad Taghipour
Michael Friswell
Hamed Haddad Khodaparast
format Journal article
container_title Mechanical Systems and Signal Processing
container_volume 153
container_start_page 107507
publishDate 2021
institution Swansea University
issn 0888-3270
doi_str_mv 10.1016/j.ymssp.2020.107507
publisher Elsevier BV
college_str College of Engineering
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hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
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description The dynamic response of individual components in an assembled structure shows high accuracy compared to experimental measurements of the system response. However, when it comes to assemblies, the conventional linear approaches fail to deliver good accuracy, due to the uncertain linear and nonlinear mechanisms in the contact interface of the joints. Therefore, the inherent dynamics of the contact interfaces needs to be considered in modeling assembled structures. In this paper the prediction of the nonlinear dynamic response in a bolted flange joint was obtained in two ways. First, a 3D detailed finite element model capable of representing the micro-slip mechanism was made using a quasi-static time stepping analysis. The linear characteristics and nonlinear mechanisms developing in the contact interface of a bolted joint are investigated by using the 3D detailed model. Moreover, the natural frequencies of the assembled structure (representing the linear response) and the micro-slip behavior in terms of hysteresis loops (representing the nonlinear response) are obtained using the detailed model. Second, an equivalent model composed of beam elements and an appropriate joint model is then constructed for the assembled structure. An identification approach is proposed, and the parameters of the joint model are identified using both linear and nonlinear characteristics, i.e. natural frequencies and hysteresis loops. Comparing the hysteresis loops obtained from the detailed and equivalent models verifies the accuracy of the joint model used to represent the contact interface and the identification approach proposed for parameter quantification.
published_date 2021-05-15T04:15:04Z
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