简介：Thedeterminationofstructuraldynamicstressspectrumdistributionisofgreatsignificanceinthestructuralfatiguestrengthevaluationaswellasreliabilitydesign.Inpreviousempiricaldataprocessingmethods,thedatagroupinganddistributionfittingwereexcessivelycoarseandcontaineddistinctivedefects.Thispaperproposedaneffectiveapproachtostatisticallygroupactualmeasureddynamicstressdataandvalidlyextrapolatethecombineddistributiontofitthedynamicstressspectrumdistribution.Thisapproachhasbeenverifieditseffectivenessthroughchi-squaretest,stressspectrumextrapolationanddamagecalculationindynamicstressstudy.
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