• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 24 Issue 6
Nov.  2011
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Article Contents
GUO Hui-Yong, WANG Lei, LI Zheng-Liang. Two-StageDamageDetectionMethodBasedonImprovedParticleSwarm OptimizationAlgorithm[J]. Journal of Southwest Jiaotong University, 2011, 24(6): 926-932.
Citation: GUO Hui-Yong, WANG Lei, LI Zheng-Liang. Two-StageDamageDetectionMethodBasedon ImprovedParticleSwarm OptimizationAlgorithm[J]. Journal of Southwest Jiaotong University, 2011, 24(6): 926-932.

Two-StageDamageDetectionMethodBasedon ImprovedParticleSwarm OptimizationAlgorithm

  • Publish Date: 01 Dec 2011
  • In orderto solvestructural multi-damageidentification problem,atwo-stage identificationmethodbasedontheparticleswarm optimization (PSO)algorithm andthe Bayesiantheorywasproposed.Inthismethod,structuralmodalstrainenergy (MSE)and frequencyareconsideredastwoinformationsources,andthe methodsbasedonfrequency changeand MSE dissipationratioareutilizedtoextractdamageinformation.Then,the Bayesiantheoryisutilizedtointegratethetwoinformationsourcesandpreliminarilydetect structuraldamagelocations.Finally,the PSO algorithm isadoptedto preciselyidentify structuraldamagelocationsandextents.Inordertoimprovetheidentificationresultsofa simplePSOalgorithm,threeimprovedstrategies,particleposition mutation,elitistmicro- searchanddoubleconvergencecriterion,werepresented.Thesimulationresultsforatwo- dimensionaltrussstructureshowthattheBayesiantheorycanidentifythesuspecteddamage locations,theimproved PSO algorithm can preciselydetectthedamageextent,andthe identificationprecisionofthePSOalgorithm withthethreeimprovedstrategiesisobviously betterthanthoseoftheotherPSOalgorithmsandthegeneticalgorithm.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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