Imperial College London

DrLoicSalles

Faculty of EngineeringDepartment of Mechanical Engineering

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 2243l.salles Website

 
 
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Assistant

 

Mr Peter Higgs +44 (0)20 7594 7078

 
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Location

 

556City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Armand:2019:10.1098/rspa.2018.0731,
author = {Armand, J and Pesaresi, L and Salles, L and Wong, C and Schwingshackl, CW},
doi = {10.1098/rspa.2018.0731},
journal = {Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences},
title = {A modelling approach for the nonlinear dynamics of assembled structures undergoing fretting wear},
url = {http://dx.doi.org/10.1098/rspa.2018.0731},
volume = {475},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - © 2019 The Author(s) Published by the Royal Society. All rights reserved. Assembled structures tend to exhibit nonlinear dynamic behaviour at high excitation levels due to the presence of contact interfaces. The possibility of building predictive models relies on the ability of the modelling strategy to capture the complex nonlinear phenomena occurring at the interface. One of these phenomena, normally neglected, is the fretting wear occurring at the frictional interface. In this paper, a computationally efficient modelling approach which enables considerations of the effect of fretting wear on the nonlinear dynamics is presented. A multiscale strategy is proposed, in which two different time scales and space scales are used for the contact analysis and dynamic analysis. Thanks to the decoupling of the contact and dynamic analysis, a more realistic representation of the contact interface, which includes surface roughness, is possible. The proposed approach is applied to a single bolted joint resonator with a simulated rough contact interface. A tendency towards an increase of real contact area and contact stiffness at the interface is clearly observed. The dynamic response of the system is shown to evolve over time, with a slight decrease of damping and an increase of resonance frequency, highlighting the impact of fretting wear on the system dynamics.
AU - Armand,J
AU - Pesaresi,L
AU - Salles,L
AU - Wong,C
AU - Schwingshackl,CW
DO - 10.1098/rspa.2018.0731
PY - 2019///
SN - 1364-5021
TI - A modelling approach for the nonlinear dynamics of assembled structures undergoing fretting wear
T2 - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
UR - http://dx.doi.org/10.1098/rspa.2018.0731
VL - 475
ER -