A hybrid Particle Swarm Optimization - Simplex algorithm (PSOS) for structural damage identification


Autoria(s): BEGAMBRE, O.; LAIER, J. E.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2009

Resumo

This study proposes a new PSOS-model based damage identification procedure using frequency domain data. The formulation of the objective function for the minimization problem is based on the Frequency Response Functions (FRFs) of the system. A novel strategy for the control of the Particle Swarm Optimization (PSO) parameters based on the Nelder-Mead algorithm (Simplex method) is presented; consequently, the convergence of the PSOS becomes independent of the heuristic constants and its stability and confidence are enhanced. The formulated hybrid method performs better in different benchmark functions than the Simulated Annealing (SA) and the basic PSO (PSO(b)). Two damage identification problems, taking into consideration the effects of noisy and incomplete data, were studied: first, a 10-bar truss and second, a cracked free-free beam, both modeled with finite elements. In these cases, the damage location and extent were successfully determined. Finally, a non-linear oscillator (Duffing oscillator) was identified by PSOS providing good results. (C) 2009 Elsevier Ltd. All rights reserved

CNPq - Brazil (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)

Identificador

ADVANCES IN ENGINEERING SOFTWARE, v.40, n.9, p.883-891, 2009

0965-9978

http://producao.usp.br/handle/BDPI/17873

10.1016/j.advengsoft.2009.01.004

http://dx.doi.org/10.1016/j.advengsoft.2009.01.004

Idioma(s)

eng

Publicador

ELSEVIER SCI LTD

Relação

Advances in Engineering Software

Direitos

restrictedAccess

Copyright ELSEVIER SCI LTD

Palavras-Chave #Particle Swarm Optimization #Damage identification #Inverse problems #Truss structure #Cracked beam #Non-linear oscillator #GLOBAL OPTIMIZATION #FAULT-DETECTION #PREDICTION #MODELS #Computer Science, Interdisciplinary Applications #Computer Science, Software Engineering
Tipo

article

original article

publishedVersion