Semi-theoreticalanalysesforpenetrationdepthofrigidprojectiles

withdifferentnosegeometriesintoconcrete(rock)target

WU Hao; FANGQin; GONG Zi-ming

doi:10.11883/1001-1455(2012)06-0573-08

Volume 32 Issue 6

Apr. 2014

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Article Navigation > Explosion And Shock Waves > 2012 > 32(6): 573-580

Xue Da-wen, Chen Zhi-hua, Han Jun-li. Physical characteristics of circular heavy gas cloud explosion[J]. Explosion And Shock Waves, 2014, 34(6): 759-763. doi: 10.11883/1001-1455(2014)06-0759-05

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WU Hao, FANGQin, GONG Zi-ming. Semi-theoreticalanalysesforpenetrationdepthofrigidprojectiles withdifferentnosegeometriesintoconcrete(rock)target[J]. Explosion And Shock Waves, 2012, 32(6): 573-580. doi: 10.11883/1001-1455(2012)06-0573-08

Xue Da-wen, Chen Zhi-hua, Han Jun-li. Physical characteristics of circular heavy gas cloud explosion[J]. Explosion And Shock Waves, 2014, 34(6): 759-763. doi: 10.11883/1001-1455(2014)06-0759-05

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Semi-theoreticalanalysesforpenetrationdepthofrigidprojectiles withdifferentnosegeometriesintoconcrete(rock)target

doi: 10.11883/1001-1455(2012)06-0573-08

1.
InstituteofStructuralMechanics,ChinaAcademyofEngineeringPhysics,
2.
Mianyang621900,Sichuan,China;

Funds:

NationalNaturalScienceFoundationofChina(51021001,51008304,51178461)

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Corresponding author: WU Hao
Publish Date: 2012-11-25

Abstract

Abstract

Basedonthedynamicsphericalcavity-expansiontheoryandthetwo-stagepenetrationmodel consistingofcrateringandtunneling,adimensionlessformulawasproposedfornormalpenetration depthofrigidprojectilesintoconcreteandrocktargetsbytakingatruncated-ogivenoseprojectileas anexample.Intheproposedformula,thesurfaceintegrationmethodwasapplied,andthemassratio andtheimpactfactorwereintroduced,aswellasthedimensionlesscoefficientsdenotingtheprojectile nosegeometryandtheprojectile-targetfrictioneffect,toconsiderthevariationofprojectilenosegeometry, crateringdepth,andtangentialresistanceonprojectiles.Andtheproposedformulacanberegressedtotheclassicpenetrationformulaeinspecialcases. Theproposedformulawasvalidatedby comparingthepenetrationdepthspredictedbytheproposedformulawiththosepredictedbytheexistingtenclassicempiricalandsemi- empiricalformulaeaswellastheexperimentaldatafromeightfield shottestsofconcreteandrocktargetshitbyprojectileswithdifferentnosegeometries.Basedonthe testsandparametricanalyses,thecorrespondingparametervalueswererecommendedaimingtodifferentnoseprojectiles, includingthedynamicprojectile-targetfrictionalcoefficientofconcreteand rocktargets,aswellasthelinearcoefficientofcrateringdepthrelatedtotheimpactfactor.
- mechanicsofexplosion|penetrationdepth|dynamicsphericalcavity-expansiontheory| concrete,
- rock|impactfactor|kineticenergyprojectil,

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