Protectiveeffectofguardingfluidcabinbulkhead

underattackingbyexplosionfragments

XU Shuang-xi; WU Wei-guo; LI Xiao-bin; KONG Xiang-shao; HUANG Yan-ling

doi:10.11883/1001-1455(2010)04-0395-06

Volume 30 Issue 4

May 2014

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Article Navigation > Explosion And Shock Waves > 2010 > 30(4): 395-400

XU Shuang-xi, WU Wei-guo, LI Xiao-bin, KONG Xiang-shao, HUANG Yan-ling. Protectiveeffectofguardingfluidcabinbulkheadunderattackingbyexplosionfragments[J]. Explosion And Shock Waves, 2010, 30(4): 395-400. doi: 10.11883/1001-1455(2010)04-0395-06

Citation:

XU Shuang-xi, WU Wei-guo, LI Xiao-bin, KONG Xiang-shao, HUANG Yan-ling. Protectiveeffectofguardingfluidcabinbulkhead underattackingbyexplosionfragments[J]. Explosion And Shock Waves, 2010, 30(4): 395-400. doi: 10.11883/1001-1455(2010)04-0395-06

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Protectiveeffectofguardingfluidcabinbulkhead underattackingbyexplosionfragments

doi: 10.11883/1001-1455(2010)04-0395-06

1.
SchoolofTransportation,WuhanUniversityofTechnology,Wuhan430063,Hubei,China;
2.
KeyLaboratoryof HighSpeedShipEngineering,MinistryofEducation,

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Corresponding author: XU Shuang-xi
Publish Date: 2010-07-25

Abstract

Abstract

Aimedatfragmentpenetrationintofluidcabinbulkhead,atheoreticalanalysismodelwas establishedtoexplorethepenetrationprocessofwater-backedtargets.Basedontheenergyanalysis,a formulafortheresidualvelocityofthefragmentafterthewater-backedtargetpenetrationwasderived bycombiningthemotionequationandtheDeMarremodel.Thederivedformulawasappliedtocalculatetheresidualvelocitiesofthefragmentswiththeinitialvelocitiesof1.0~ 1.6km/s.Andthepenetrationprocessofthefragmentsintothewater- backedtargetwasmodeledbyusingthenon-lineardynamicsanalysissoftware, AUTODYN.Theresidualvelocitiesbythederivedformulaareinagreementwiththosebythesoftware, AUTODYN.Theresidualvelocitiesobtainedabovewerecompared withthosebytheexistentformulaforthefragmentswiththesameinitialvelocitiesaftertheairbackedtargetpenetration. Comparisonshowsthatthefluidbehindthebulkheadcanpreventfragment penetrationtoacertainextent,andthattheresidualvelocityinthecaseoftheair-backedtargetpenetrationismarkedlylowerthanthatinthecaseofthewater- backedtargetpenetration.Thehigherthe initialvelocityofthefragment,thegreaterthefluidresistance,theclearerthevelocityattenuation.
- solidmechanics,
- penetratethetarget