MechanicalPropertyStudiesforaNovelNegativePoissonsRatioLatticeMicrostructureandItsApplicationinCrashbox

MechanicalPropertyStudiesforaNovelNegativePoissonsRatioLatticeMicrostructureandItsApplicationinCrashbox.pdf
Lightweightstructureandmaterial,suchascellularmaterial,playanimportantroleinvehicleengineering.Inthispa-per,wedesignanovelnegativePoisson'sratio(NPR)latticemicrostructure.TherelativedensityformulafortheNPRlatticematerialisfirstlygiven.Byusingthesinglecellfiniteelementmodel,parametersanalysesareperformedfortheeffectiveelasticmodulusandPois-son'sratioofNPRlatticemicrostructure.Then,thecompressionmechanicalpropertiesoftheNPRlatticemicrostructurearestudiedbyusingthenonlinearfiniteelementanalysisprogramLS-DYNA.Forthequasi-staticcompressionanalysis,theresultsshowthattheNPRstructurehasawiderangeofstressplateauarea,lowfirstpeakstress,anenhancedplateaustressandawiderangeofthehighidealen-ergyabsorptionefficiency.Finally,usingtheNPRmicrostructuretodesignthecrash-box,electricvehiclefrontcollisionanalysisiscar-riedout.Comparedwiththeoriginalmodel,thefirststepofthewholeaccelerationdecreaseobviously,andtheintrusionsofmeasurepointsareimprovedevidently.Thoughourcurrentstudieslackexperimentvalidation,thesimulationresultshaveshownthatNPRcrash-boxisbetterthanthetraditionalcrashbox,andNPRlatticemicrostructurehasagreatpotentialasthenext-generationlightweightenergyabsorptionmaterial.
作者：ChenZeyaoWangZheWuXianShaoJianwangZhangShuxian
作者单位：SchoolofAutomotiveStudies,TongjiUniversity
母体文献：第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集
会议名称：第19届亚太汽车工程年会暨2017中国汽车工程学会年会  
会议时间：2017年10月24日
会议地点：上海
主办单位：中国汽车工程学会
语种：chi
分类号：
关键词：negativepoisson'sratio  latticemicrostructure  effectivemechanicalproperties  quasi-staticcompression  crash-box
在线出版日期：2020年7月9日
基金项目：
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MechanicalPropertyStudiesforaNovelNegativePoissonsRatioLatticeMicrostructureandItsApplicationinCrashbox.pdf

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