您好,欢迎访问三七文档
当前位置:首页 > 中学教育 > 高中教育 > 装甲材料侵彻试验仿真
252JOURNALOFVIBRATIONANDSHOCKVo.l25No.22006:2005-05-10:2005-07-03,,19791121(1.,200030;2.051),,,,,,:,,:O347:A0,,,,,,,,,,[1],,,[2][3][4],[5][6],[7],[8][9],,Lagrange,,LS-DYNA,,,111,BackmanGoldsmith[10]:,,,,,,,,,,,12,[11],,mv0,m,v0,(m+R2phtt)vf,Rp,ht,t,vf,mv0=(m+R2phtt)vf(1)vf=mm+R2phttv0(2)l0,m=R2pl0t(3)vfvf=l0l0+htv0(4),,,(4),2,,,5.00m,1.5m,32mm;,,164mm250mm,10mm;0.9m,0.13m,0.54m,,;,,6011,,5m,,260m/s,174m/s,22331,Belytschko-Tsay,;Hughes-Liu,;,,,;,,6547,982,840933,,,,,118200625Cowper-Symonds[12],y:y=1+c1p(0+Eppeff)(5)0;peff;Ep,EEtan,Ep=EtanEE-Etan;,=0,=1,01;,=ijij,cpCowper-Symonds,,,,,,,,,,Z,Z260m/s,10ms3210ms,4,,0.6m,(2)451.5ms,188.99m/s,174m/s,8.6%,,,,,,,510ms6,3649(),510kNm,,6100ms4LS-DYNA,,,,1.5ms,,,,,(124)1192:9f(x,t)3,:f(x,t),f(x,t)f(x,t),,,,,1LinJH,GuoXL.Computersimulationofstructuralrandomloadingidentification,ComputersandStructures(2001),79,3753872,..,1996,9(1):183TommyHT,YuChanling,LawSS.Comparativestudiesonmovingforceidentificationfrombridgestrainsinlaboratory,Jour-nalofSoundandVibration,2000,235(1),871044ZhuXQ,LawSS.IdentificationofvehicleaxleLoadsfrombridgedynamicresponses,JournalofSoundandVibration,2000,236(4),7057245LawSS.ChanTHT.ZhuQX,ZengQH.Regularizationinmovingforceidentification,JournalofEngineeringMechanics,2001,127,1361486ChanTHT,YungTH.Atheoreticalstudyofforceidentificationusingprestressedconcretebridges,EngineeringStructures,2000,23,152915377,..,1996,28(6):7557608,,.,,1998,17(2):14(119),,,,,,,1.[M].,19842DamodarR.Ambur,NavinJaunky,etc.Numericalsimulationsforhigh-energeimpactofthinplates[J].InternationalJournalofImpactEngineering,2001,25:6837023JamesD.Walker.Amodelforpenetrationbyverylowaspectratioprojectiles[J].InternationalJournalofImpactEngineer-ing,1999,23:9579664,.[J].,2004,23(1):1011075,,,.[J].,2003,26(6):356,,.SMA[J].,2004,23(1):70737,,.[J].,2003,32(6):4404428,,,,.[J].(),2001,2(4):66709,,.[J].,2002,25(6):212410BackmanM.E.,GoldsmithW.Themechanicsofpenetrationofprojectilesintotargets[J].InternationalJournalofEngineeringScience,1978,16(1):110811,.[M].,199812JonesN.StructuralImpact[M].(1stEdition,1989).Paper-backEdition.Cambridge,CambridgeUniversityPress,1997,403405124200625EXPERIMENTALSTUDYONNON-LINEARSHOCKRESPONSEOFSHIPBOARDEQUIPMENTINCONSIDERATIONOFELASTICITYOFRAFTBODYANDBASEJiangGuohe1YinLiguo2ShenRongying3WuGuangming4(1JiangsuUniversityofScienceandTechnology,Zhenjian212003;2711institute,shanghai200011;3StateKeyLab.ofVibration,Shock&Noise,ShanghaiJiaoTongUniversity,Shanghai200030;4701institute,shanghai201102)AbstractTheexperimentalmethodisanimportantroletostudytheperformanceoftheshockisolationsystemoftheshipboardequipments.Toanalyzetheeffectoftheelasticityofraftbodyandbaseanddifferentworkingclearanceofdis-placementrestrictoronnon-linearshockresponseofshipboardequipmenttheexperimentalmodelsofshipboardequipmentusingshockisolatorwithdisplacementrestrictorconsideringelasticraftbodyandelasticbasearesetup.Theexperimentalresultsofmodelsshowthattheelasticityofraftbodyandbasedecreasesthemaximumaccelerationofequipments.Forbothelasticandsolidfloatingraftsystem,therelationsbetweentheworkingclearanceofthedisplacementrestrictorandtheshockresponsearethesame.Astheworkingclearancedecreases,themaximumaccelerationofraftbodyandequipmentsincreases.Keywords:shipboardequipmen,tshockisolation,shockresponse,displacementrestrictor,experimentalstudyEXPERIMENTALRESEARCHONAIRSPRINGSSHOCKLOADCHARACTERISTICSWuShanyueHuangYingyunZhuShijian(Inst.ofNoise&Vibration,NavalUniv.ofEngineering,Wuhan430033)AbstractForThestudyofthetheoreticalmodelundershockload,anairspringwastestedbyusingashock-ma-chine.Theshockloaddeflectioncurvesunderdifferentdeflectionrateswereacquiredthroughexperiments,andthencom-paredwiththestaticloaddeflectioncurvestoanalyzetheinfluenceofthedeflectionrateontheloaddeflection.Besidestheloaddeflectioncurves,thedynamicpressureparametersonthedifferentpositionsinsidetheairbagweremeasuredbymeansofspecialsensors.Accordingtothepressuredata,therulesfortheairvariationinsidethebagwerestudied,andfurtherexplainedintheory.Keywords:airspring,shockloadcharacteristic,experimentalresearchSIMULATIONOFPENETRATIONTESTOFARMOUREDPLATEXuQingxin1HuangJianzhong2ShenRongying1(1.StateKeyLaboratoryofVibrationShock&Noise,ShanghaiJiaoTongUniversity,Shanghai200030;2.ChinaNorthIndustriesGroupCorporation051Base)AbstractSimulationofpenetrationtestofarmouredplateispresentedbyexplicitdynamicsalgorifhm.Basedontheoryofimpactdynamics,theprocessofpenetrationtestissimulatedandthestrengthofsupportingframeischecked.ItisprovedthatcontactalgorithmofLS-DYNAisreliable.Withlowercos,tshorterperiodandbetterrepeatability,numer-icalsimulationishelpfultophysicaltes.tKeywords:armouredplate,penetration,numericalsimulation189Vo.l25No.22006JOURNALOFVIBRATIONANDSHOCK
本文标题:装甲材料侵彻试验仿真
链接地址:https://www.777doc.com/doc-7307133 .html