閉孔泡沫純鋁孔結(jié)構(gòu)統(tǒng)計分析及其變形吸能的實驗研究.pdf

1、東南大學(xué)碩士學(xué)位論文閉孔泡沫純鋁孔結(jié)構(gòu)統(tǒng)計分析及其變形吸能的實驗研究姓名：唐兆琛申請學(xué)位級別：碩士專業(yè)：固體力學(xué)指導(dǎo)教師：楊?？?0090201AbstractAbstractClosedcellAIfoamisaniceenergyabsorptionorpackagingmaterial，SOastudyofitsstaticanddynamiccompressivemechanicalbehaviorsandenergyabsor

2、bingcapacitymeanstoomuchAlthoughsomeonehasstudiedthecompressivemechanicalbehaviorsofclosedcellAIfoamunderquasistaticandllighstrainrateloadconditions，therearefewreportsaboutitsbehaviorsduringthelowormiddlespeedloadingfore

3、xampletestresultsusingdynamictestingrigInthisdissertationthemechanicalbehaviorsandenergyabsorbingcapacityofclosedcellAIfoamunderquasistaticanddynamictestingrigwereinvestigatedByusingofdigitalimagecorrelationmethod，thecol

4、lapsemechanismsofcellsunderquasistaticloadwereanalyzedThemainworkcanbeintroducedbrieflyinthreeparts1Byusingamplificationtechniquewithhighresolutionandimageprocessingsoftwaredevelopedbyprojectgroup，thegeometricalcharacter

5、isticofcellsonmaterialsurfacearcmeasuredTheclassificationrulesofnmnberareatheratiooflongaxisandshortaxis，theanglebetweenthelongaxisandthehorizonandthecenterdistanceoftheadjacentcellsareachieved2Thedeformationbehaviorsofa

6、singlecellandtheevolutionoffracturezoneunderquasistatic10ada∞studied，thefracturezorlesarelocatedbydigitalimagecorrelationmethodFurthermore，thecollapsemechanismsofcellsareanalyzedonthebasisofthehypothesisofthesamewallthic

7、knessandnointernalmicrodefects3AsetofdynamictestingrigdeviceisdesignedbasedontheprincipleofMachetetestingrigThestress—straincurvecharacteristicsunderdynamicimpactaleinvestigatedthencalculatingenergyabsorptionvalueandener

8、gyabsorptionefficiencyvalueunderdifferentstrainfurthermoremakingabriefdiscussionontheenergyabsorptioncharacteristicsThegeometricalfeaturesstatistics，quasistaticanddynamiccompressivemechanicalbehaviors，energyabsorptionabi

9、lityandcollapsemechanismsareinvolvedinthisdissertationTheseexperimentalresultsCanbeappliedtotheengineeringandlayafoundationforfurtherresearchInadditiontheinvestigationofthecollapsemechanismofclosedcellAIfoamCanhelptomode