Experimental analysis of dynamic characteristics in bolted joint interfaces of thin plates

Nidhal Jamia, P. Pandey, Hamed Farokhi, M. I. Friswell, Hamed Haddad Khodaparast, Hassan Jalali

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, the authors explore the dynamics characteristics of bolted joint interfaces in thin plates, focusing on the uncertainty in stiffness and damping due to variations in contact interfaces. The research primarily investigates joint stiffness and damping caused by energy loss in bolted connections, particularly under conditions of varying bolt torque. A unique experimental setup employing nonlinear modal testing is used to analyse the complex behaviour of bolted joints. This setup includes phase-resonant testing to accurately track the backbone curves of nonlinear frequency responses, which is essential for understanding the mechanicalproperties of bolted joints. The experimental findings focus on the relationship between bolt torque loosening and the resultant stiffness and damping effects, offering insights into the complex interplay between structural integrity and damping efficiency. This study contributes to the modelling of damping in bolted joints, addressing the inherent uncertainties and nonlinearities in such systems. The results have significant implications for improving the prediction and optimisation of damping in assembled structures with bolted joints, with potential applications in various engineering applications.
Original languageEnglish
Title of host publicationProceedings of ISMA2024
EditorsW. Desmet, B. Pluymers, D. Moens, J. del Fresno Zarza
Place of PublicationLeuven, Belgium
PublisherISMA
Pages1051–1065
Number of pages16
ISBN (Electronic)9789082893175
Publication statusPublished - 9 Sept 2024
EventISMA2024: International Conference on Noise and Vibration Engineering and USD 2024 - International Conference on Uncertainty in Structural Dynamics - KU Leuven, Leuven, Belgium
Duration: 9 Sept 202411 Sept 2024
https://www.isma-isaac.be/isma2024/

Conference

ConferenceISMA2024
Country/TerritoryBelgium
CityLeuven
Period9/09/2411/09/24
Internet address

Cite this