RELIABILITY ANALYSIS OF FRP LAMINATED PLATES WITH CONSIDERATION OF BOTH INITIAL IMPERFECTION AND FAILURE SEQUENCE-中国Betway体育网页登陆

摘要 Aprobabilistieprogressivefailureanalyzingmethodisappliedtoestimatingthereliabilityofasimplysupportedlaminatedeompositeplatewithaninitialimperfectionunderbi-axialeompressionload.Theinitialimperfectionandthestrengthparametersareconsideredasrandomvariables.Ply-levelfailureproba-bilityisevaluatedbythefirstorderreliabilitymethod(FORM)togetherwiththeTsai-WustrengtheriterionandTancriterion.Currentstressesinthelaminatedstructurearecalculatedbytheclassicallaminationtheorywiththestiffnessmodifiedbasedonthelaststepplyfailure.Probabilistieallydominantply-levelfailurese-quencesleadingtooverallsystemfailureareidentified,basedonwhichthesystemfailureprobabilityisesti-mated.Anumeriealexampleispresentedtodemonstratethemethodologyproposed.Throughparameterstud-iesitisshownthatthedeviationoftheinitialimperfeetionandsomeofthestrengthparameterslargelyinflu-encethesystemreliability.

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RELIABILITY ANALYSIS OF FRP LAMINATED PLATES WITH CONSIDERATION OF BOTH INITIAL IMPERFECTION AND FAILURE SEQUENCE

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