AconstitutiverelationforapressedPTFE/Alenergeticcompositematerial

XU Song-lin; YANG Shi-qing; ZHANG Wei; LU Fang-yun

doi:10.11883/1001-1455(2010)04-0439-06

Volume 30 Issue 4

May 2014

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XU Song-lin, YANG Shi-qing, ZHANG Wei, LU Fang-yun. AconstitutiverelationforapressedPTFE/Alenergeticcompositematerial[J]. Explosion And Shock Waves, 2010, 30(4): 439-444. doi: 10.11883/1001-1455(2010)04-0439-06

Citation:

XU Song-lin, YANG Shi-qing, ZHANG Wei, LU Fang-yun. AconstitutiverelationforapressedPTFE/Alenergeticcompositematerial[J]. Explosion And Shock Waves, 2010, 30(4): 439-444. doi: 10.11883/1001-1455(2010)04-0439-06

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AconstitutiverelationforapressedPTFE/Alenergeticcompositematerial

doi: 10.11883/1001-1455(2010)04-0439-06

1.
CollegeofAeronauticand MaterialEngineering,NationalUniversityofDefenseTechnology,
2.
Changsha 410073,Hunan,China;

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Corresponding author: XU Song-lin
Publish Date: 2010-07-25

Abstract

Abstract

ThecompressivebehaviorsofapressedPTFE/AlenergeticcompositematerialwereexperimentallyinvestigatedbysplitHopkinsonpressurebarsandquasi- staticbehaviorsbyauniversaltestingmachineatroomtemperature. Stress-straincurvesofthematerialwereobtainedinthestrainrate rangefrom10-3s-1to103 s-1.Accordingtotheanalysisonthecompressivebehavioratdifferent strainrates,theconstitutiverelationconsideringstrain-hardeningeffectandstrainrateeffectweredevelopedbasedontheJohnson- Cookplasticmodel.ThepenetrationofapressedPTFE/Alcomposite projectileintoasteeltargetwasnumericallysimulatedbyusingthedevelopedconstitutiverelation. Thesimulatedresultsareclosetotheexperimentalresults,whichvalidatesthereliabilityandrationalityofthedevelopedconstitutiverelation, andcanbeusedtoinstructtheapplicationofthePTFE/Al material.
- solidmechanics,
- constitutiverelation