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{Yuan:10.1016/j.compstruc.2019.106177,
author = {Yuan, J and Salles, L and El, Haddad F and Wong, C},
doi = {10.1016/j.compstruc.2019.106177},
journal = {Computers and Structures},
title = {An adaptive component mode synthesis method for dynamic analysis of jointed structure with contact friction interfaces},
url = {http://dx.doi.org/10.1016/j.compstruc.2019.106177},
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Component model synthesis (CMS) has been widely used for model order re-duction in dynamic analysis of jointed structures with localized non-linearities.The main drawback of these CMS methods is that their computational efficiencylargely depends on the size of contact friction interfaces. This work proposes anadaptive reduction approach to improve these CMS based reduction methods inthe application to the assembled structure with frictional interfaces.The mainidea of this method is that, instead of retaining the whole frictional interfaceDOFs in the reduced model, only those DOFs in a slipping or separating con-dition are retained. This would significantly reduce the size of classical CMSbased reduced models for dynamical analysis of jointed structure with micro-slipmotion, leading to an impressive computational saving. This novel approach isbased on a reformulated dynamic system that consists of a underlying linearisedsystem and including an updating internal variable to account the effects ofnon-linear contact friction force on the interface. The paper also describesthe detailed implementation of the proposed approach with harmonic balancedmethod for non-linear spectral analysis, where a new updating algorithm is putforward to enable the size of the reduced model can be automatically updatedaccording to the contact condition of interface nodes. Two distinct FE joint models are used to validate the proposed method. It is demonstrated that thenew approach can achieve a considerable computing speed-up comparing to theclassic CMS approach while maintain the same accuracy.
AU - Yuan,J
AU - Salles,L
AU - El,Haddad F
AU - Wong,C
DO - 10.1016/j.compstruc.2019.106177
SN - 0045-7949
TI - An adaptive component mode synthesis method for dynamic analysis of jointed structure with contact friction interfaces
T2 - Computers and Structures
UR - http://dx.doi.org/10.1016/j.compstruc.2019.106177
UR - http://hdl.handle.net/10044/1/75410
ER -