薄壁管堆積輕質(zhì)結(jié)構(gòu)的力學(xué)性能研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文薄壁管堆積輕質(zhì)結(jié)構(gòu)的力學(xué)性能研究姓名：王朝營(yíng)申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：工程力學(xué)指導(dǎo)教師：吳承偉20080601薄壁管堆積輕質(zhì)結(jié)構(gòu)的力學(xué)性能研究InvestigationonmechanicalpropertiesoflightweightstructurecomposedofpackedthinwalledtubeAbstractThispapermainlyinvestigatestheexperimentalc

2、onditionsandgeometricalparametersoflightweightthin—tubepackedstructuresTheimportantinfluencesoftheexperimentalconditionsandgeometricalparametersoilthetransfigurationmechanismandr!energyabsorptionarestudiedbystaticcoml；’4

3、cs9nexperimentandfiniteelementsoftware：Itisfoundthatlightweightstructureshavemanyuniquevirtuesrelativetotheentitativestructuresfromthestressstraincurvesofexperimentsandfiniteelementresults，suchaslightweight，smalldensity，

4、excellentenergyabsorptionandetcTheyarewidelyusedinmany：fieldsasenergyabsorberstodissipatethekineticenergyduringanemergencysuchasa：1cotlisionThesemainlyapplytoautomobile，ship，aircraft，railway，packagingandetcTherearefourch

5、aptersinthisthesisInthefirstchapter，thethesisfirstexpatriatesthebasicconception，artifactitiousmethodandperformanceofporousmaterial，andthen：simplyretrospectsthehistoricrepresentativeresearchaboutthemechanicperformancein‘：

6、this，fieldinternalandabroadandputsforwardsownresearchthoughtandcontentofthepresentthesisInchapterstwoandthree，theauthormainlyresearchesthemechanicalpropertiesioftthepackedlightweightstructures(includingtwo—dimensionandth

7、ree—dimensionstructuresof’pp，copperandstainlesssteelthesethreepipematerial)withdeferentpackedways，diameterandthicknessofthetubesatdeferentloadingspeedandgetsthestrainstressCUFgSandstructuredistortionconditionbystaticcomp

8、ressionexperimentItisfoundlightweightstucturesofthepackedthinwailed—tubeshavesuperiorabsorptionperformanceInchapterfour，thecalculationalresultsaregivenbasedopnnon—linearyfiniteelementsoftwareABAQUSThestressstraincurvesan