泡沫鋁在靜態(tài)載荷作用下力學性能的實驗研究.pdf

1、太原理工大學碩士學位論文泡沫鋁在靜態(tài)載荷作用下力學性能的實驗研究姓名：李宇燕申請學位級別：碩士專業(yè)：固體力學指導教師：樹學鋒2001.4.1查墮絲王叁蘭堡!：堡塞ABSTRACTInthispaper，experimentonmechanicalpropertyunderstaticloadingwasperformedmoreover，intheorymaterialcharacteristicforfoamedaluminiumWa

2、sanalyzedByanalysisitWasfoundthattheoryisinagreementwithexperimentInstaticexperiment，effectsofporosityandceltsizeonmaterialpropertiesforfoamedaluminiurnwerestudiedmoreover，relationbetweenvolumeandstrainunderuniaxialcompr

3、essionforfoamedaluminiumwasstudiedbyexperimentItwasconcludedfromexperimentthatfoamedaluminiamunderuniaxialcompressionundergoesthreestages，thatis，linearelasticstage，plateaustage，densificationstagefoamedaluminiumhaven’tdis

4、tinctyieldpoint，tensilestrengthissmall，ithavehardlyextensionratewhencellsizeisthesame，elasticmodulusultimatestrength，yields訂essdecreasewithporosity’Sincrease，whenporosityisthesameelasticmodulus，ultimatestrength，yieldstre

5、ssdecreasewithcellsize’Sincrease，volumeforfoamedaluminiumunderuniaxialcompressiondecreasesanddensityincreaseswhenstrainincreases，foamedaluminium’sstrengthissmallerthancellwallmaterial’sstrengthPhotosoncellstructure’Sdefo

6、rmationforfoamedaluminiumweretakenbyscanningelectronmicroscopyItWasindicatedthatporosityishigher，compressionstrengthissmaller，cellsizeishigher，compressionstrengthissmallerIntheprocessoftheoreticalanalysisformaterialfeatu