Bolt-Jointed Structural Modelling by Including Uncertainty in Contact Interface Parameters

Nidhal Jamia*, Hassan Jalali, Michael I. Friswell, Hamed Haddad Khodaparast, Javad Taghipour

*Corresponding author for this work

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

Abstract

In jointed structures, both stiffness and damping properties are affected by the way that the contact interfaces behave. The overall behaviour of the contact interface is the result of different parameters; among them are the contact surface quality and interface pressure distribution. Small changes in these parameters result in a considerable change in the physics of the contact interface and hence introduce variability in structural dynamics properties. The variability in the contact interface can happen among nominally identical structures. These features raise the need for robust models of the joint contact interface to predict their performance in the structure. In this paper, experimental modal testing of a set of nominally identical Brake-Reuss beam structures is employed to investigate the effect of preload on the variability in the natural frequencies and damping ratios for different modes of the structure. The contact interface is modelled using a representative stochastic model to account for the variabilities in the contact interface parameters. Finally, the distribution of the joint model stiffness parameters is identified using the variability in dynamic properties.

Original languageEnglish
Title of host publicationNonlinear Structures and Systems, Volume 1
Subtitle of host publicationProceedings of the 40th IMAC, A Conference and Exposition on Structural Dynamics, 2022
EditorsMatthew R.W. Brake, Ludovic Renson, Robert J. Kuether, Paolo Tiso
Place of PublicationCham, Switzerland
PublisherSpringer
Pages193-201
Number of pages9
Volume1
ISBN (Electronic)9783031040863
ISBN (Print)9783031040856, 9783031040887
DOIs
Publication statusPublished - 29 Jul 2022
Event40th IMAC, A Conference and Exposition on Structural Dynamics, 2022 - Orlando, United States
Duration: 7 Feb 202210 Feb 2022

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume1
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference40th IMAC, A Conference and Exposition on Structural Dynamics, 2022
Country/TerritoryUnited States
CityOrlando
Period7/02/2210/02/22

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