結(jié)構(gòu)動力特性逆分析及其在結(jié)構(gòu)損傷檢測中的應(yīng)用.pdf

1、武漢理工大學(xué)碩士學(xué)位論文結(jié)構(gòu)動力特性逆分析及其在結(jié)構(gòu)損傷檢測中的應(yīng)用姓名：施志深申請學(xué)位級別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：李卓球20020101ABSTRACTBasedontheInverseProblemsinDynamics，thisthesisdiscussesthedamageidentificationprocedureofstructuresItiswellknownthat，determiningthedamagepar

2、ametersfrommodalparametershiftsbelongstOthegroupofinverseproblemsofdynamicsInthisthesis，theorigin，definition，anddependenceofthesolutionuniquenessoftheinverseproblemandillconditioningarediscussedfirstFromatheoreticalstand

3、pointlingerinverseproblemissolvableinstraightforwardwayHoweveritrequiressignificantcomputationaleffortsandusuallyresultsinnonconvergenceinpracticeAlternativelythegeneticalgorithms(GA)approachisadoptedSomenumericalexample

4、sarepresentedafterthatAsforModalAnalysisanditsapplicationinStructuralDamageIdentification(SDI)areconcerned，system’SbehaviorisassumedtobelineardamageisrepresentedbyamoreorlessconcentrateddecreaseinstiffnessStudiesofthesen

5、sitivenessofthedamage—indicatorsshowedthatthesuccessofdamageidentificationproceduresdependsmuchonthetypeofindicatoremployedfordiagnosticsFinallyageneralizationoftheprocedurebasedonfloating—pointcodinggeneticalgorithmsass

6、ociatedwithfinite—elementmodels，whichmakespossiblethetacklingpossiblecomplexstructuralcases，isdevelopedandillustratedNumericalexamplesarepresentedinsuccessionandprovetheproposedmethodtoberobustandeffectiveKeywords：Invers