机械可靠性分析的高精度响应面法(8)

机械可靠性分析的高精度响应面法

ASCE,2000,127(11):1165-1173.

[23]　杨成永,张弥,白小亮.用于结构可靠性分析的多响应面法[J].北方交通大学学报,2001,25(1):1-

4.

[24]　DengJ,GuDS,LiXB,etal.Structuralreliabilityanalysisforimplicitperformancefunctionusing

artificialneuralneuralnetwork[J].StructuralSafety,2005,27(1):25-48.

AdvancedResponseSurfaceMethodforMechanical

ReliabilityAnalysis

LΒZhen-zhou,　ZHAOJie,　YUEZhu-feng

(SchoolofAeronautics,NorthwesternPolytechnicalUniversity,

Xi’an710072,P.R.China)

Abstract:Basedontheclassicalresponsesurfacemethod(),aimprovedex2perimentalpoints(EPs)ispresentedforreliabilityinthepre2sentedmethod.OneistheuseoflinearfordeterminingtheRSareselectedtobeclosertotheactualtheapplicationofsequentiallinearinterpolationtocontrolEPsandthecenterEP,bywhichthepresentedRSfitstheactualfailuresurfaceintheregionofmaximumlike2lihoodastotheactualmostprobablepoint(MPP).Sincethefittingpreci2sionofthetotheactualfailuresurfaceinthevicinityoftheMPP,whichhassignificantcontribu2tiontotheprobabilityofthefailuresurfacebeingexceeded,isincreasedbythepresentedmethod,theprecisionofthefailureprobabilitycalculatedbyRSisincreasedaswell.Numericalexamplesillustratetheaccuracyandefficiencyofthepresentedmethod.

Keywords:responsesurfacemethod;implicitlimitstate;failureprobability