Imperial College London

DrLoicSalles

Faculty of EngineeringDepartment of Mechanical Engineering

Research Fellow
 
 
 
//

Contact

 

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

 
 
//

Assistant

 

Mr Peter Higgs +44 (0)20 7594 7078

 
//

Location

 

556City and Guilds BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Yuan:2020:10.1016/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},
volume = {229},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Component model synthesis (CMS) has been widely used for model order reduction in dynamic analysis of jointed structures with localized non-linearities. The main drawback of these CMS methods is that their computational efficiency largely depends on the size of contact friction interfaces. This work proposes an adaptive reduction approach to improve these CMS based reduction methods in the application to the assembled structure with frictional interfaces. The main idea of this method is that, instead of retaining the whole frictional interface DOFs in the reduced model, only those DOFs in a slipping or separating condition are retained. This would significantly reduce the size of classical CMS based reduced models for dynamical analysis of jointed structure with micro-slip motion, leading to an impressive computational saving. This novel approach is based on a reformulated dynamic system that consists of a underlying linearised system and an adaptive internal variable to account the effects of non-linear contact friction force on the interface. The paper also describes the detailed implementation of the proposed approach with harmonic balance method for non-linear spectral analysis, where a new updating algorithm is put forward to enable the size of the reduced model can be automatically updated according to the contact condition of interface nodes. Two distinct FE joint models are used to validate the proposed method. It is demonstrated that the new approach can achieve a considerable computing speed-up comparing to the classic 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
PY - 2020///
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
VL - 229
ER -