Dynamicplasticresponseoffoamsandwichbeams

subjectedtoimpactloading

JING lin; WANG Zhi-hua; ZHAO Long-mao; YAN Qing-rong

doi:10.11883/1001-1455(2010)06-0561-08

Volume 30 Issue 6

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JING lin, WANG Zhi-hua, ZHAO Long-mao, YAN Qing-rong. Dynamicplasticresponseoffoamsandwichbeamssubjectedtoimpactloading[J]. Explosion And Shock Waves, 2010, 30(6): 561-568. doi: 10.11883/1001-1455(2010)06-0561-08

Citation:

JING lin, WANG Zhi-hua, ZHAO Long-mao, YAN Qing-rong. Dynamicplasticresponseoffoamsandwichbeams subjectedtoimpactloading[J]. Explosion And Shock Waves, 2010, 30(6): 561-568. doi: 10.11883/1001-1455(2010)06-0561-08

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Dynamicplasticresponseoffoamsandwichbeams subjectedtoimpactloading

doi: 10.11883/1001-1455(2010)06-0561-08

1.
TheinstituteofApplied MechanicsandBiomedicalEngineering,

Funds:

NationalNaturalScienceFoundationofChina(10572100,90716005,10802055)

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Corresponding author: YAN Qing-rong
Publish Date: 2010-11-25

Abstract

Abstract

Aninvestigationondynamicresponseofclampedsandwichbeamswithaluminumfoam coresandmonolithicbeamswasachievedbyusingaluminumfoamprojectileloading.LDVdeviceand Laserdisplacementtransducerwereappliedto measureimpactvelocityofprojectileanddeflectiontimehistoryofthemid- pointofbackfaceofthebeam,respectively.Andthentheeffectsofapplied impulse,face-sheetthickness,andcorethicknessontheresponseofstructureswerestudied.Deformationandfailuremodesofsandwichbeamsareexhibitedaccordingtoexperimentalinvestigation. The resultsindicatethatthestructuralresponseissensitivetotheconfigurationofsandwichstructures. Thepermanentdeflectionofthemid-pointofbackfaceispresentedproportionalrelationshipwithappliedimpulseandface- sheetthickness,respectively.Comparingwithmonolithicbeamsofthesame mass,theresultshowsthatsandwichbeamshaveasuperiorshockresistance.Theexperimentalresultsareofworthtooptimumdesignofcellularmetallicsandwichstructures
- solidmechanics,
- dynamicresponse,
- impactloading,
- sandwichbeam,
- aluminumfoam