蜂窩夾芯結(jié)構(gòu)非線性屈曲分析.pdf

1、哈爾濱工業(yè)大學(xué)碩士學(xué)位論文蜂窩夾芯結(jié)構(gòu)非線性屈曲分析姓名：郝建芳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：工程力學(xué)指導(dǎo)教師：吳林志20050601。墮塵堡三蘭盔耋三耋堡圭蘭堡絲蘭AbstractSincethehoneycombsandwichstructureofcompositematerialshasoutstandingproperties，suchaslargerstiffness，lighterweight，bettersoundandhea

2、tinsulation，ete，theyarewidelyappliedinthefieldsofAeronauticsandAstronauticsinrecentyearsThiskindofstructureusuallyworksundertheaxialcompression，andbucklingiSoneofmainfailuredestructformsTheeigenvalue(orlinear)bucklingana

3、lysisandnonlinearbucklinganalysisofhoneycombsandwichcylindricalshellsareperformedinthispapeLInChapterOne，thispaperthestabilitystudiesofcylindricalshellsarereviewedInChapterTwo，theequivalentmethodinwhichtheextensionofhone

4、ycombwallsiStakenintoaccountisusedtocalculatetheeffectiveelasticmodulusofthehoneycombcoreThen，thefiniteelementmodelsofhoneycombsandwichcylindricalshellsarebuiltInChapterThere，accordingtothefiniteelementmodels，theeigenval

5、ue(orlinear)bucklinganalysisisimplementedbyusingBlockLanczosmethods，andbucklingloadsaredeterminedInChapterFour，fromthelinearbucklinganalysis，thelinear1modeisimposedasgeometricalimperfect，andthearC—lengthmethodisusedtoper

6、formthenonlinearbucklinganalysisofhoneycombsandwichcylindricalshellsComparingtheresultsoflinearbucklingandnonlinearbuckling，thestabilitystudiesofhoneycombsandwichcylindricalshellsmustcalculatethenonlinearfactorThenonline

7、arbucklinganalysisgivesusuallythemoreaccurateresultsandisthereforerecommendedforthedesignorevaluationofactualstructuresInaword，thepresentcalculationandanalysisprovideanimportantreferenceforthedesignofhoneycombsandwichstr