Interval sensitivity analysis of joint dynamics in complex built-up structures

Meggitt, JWR ORCID: https://orcid.org/0000-0002-6665-2939 2022, 'Interval sensitivity analysis of joint dynamics in complex built-up structures' , Journal of Vibration and Control, 529 .

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Abstract

To accurately model the dynamics of a complex built-up structure it is often necessary to forgo the assumption of ideal rigid coupling between components. The dynamic behaviour of inter-component connections, or joints, can have a significant impact on the performance, even survivability, of an assembled structure. For complex structures, where many joints are present, the complete characterisation and/or modelling of all joints is often not feasible. Hence, in the development or refinement of a component-based model there is a need to identify the response-critical joints of an assembly — those joints whose refinement would benefit the modelling effort most. In the present paper we address this issue by considering a ‘possibilistic’ interval-based assessment of joint variability, and propose a sensitivity metric to rank order joints based on their influence towards the dynamics of the assembled structure. Results are compared against local gradient-based and global sampling-based metrics as part of two numerical examples.

Item Type:	Article
Schools:	Schools > School of Computing, Science and Engineering Schools > School of the Built Environment
Journal or Publication Title:	Journal of Vibration and Control
Publisher:	SAGE Publications
ISSN:	1077-5463
Depositing User:	JWR Meggitt
Date Deposited:	03 Aug 2022 11:23
Last Modified:	17 Aug 2022 08:18
URI:	https://usir.salford.ac.uk/id/eprint/64323

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