Numericalsimulationofdynamicresponseofwarshipstructures

subjectedtounderwaterexplosionshockwavesandbubbles

WANG Shi-ping; SUN Shi-li; ZHANG A-man; CHEN Hai-long

doi:10.11883/1001-1455(2011)04-0367-06

Volume 31 Issue 4

May 2014

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WANG Shi-ping, SUN Shi-li, ZHANG A-man, CHEN Hai-long. Numericalsimulationofdynamicresponseofwarshipstructuressubjectedtounderwaterexplosionshockwavesandbubbles[J]. Explosion And Shock Waves, 2011, 31(4): 367-372. doi: 10.11883/1001-1455(2011)04-0367-06

Citation:

WANG Shi-ping, SUN Shi-li, ZHANG A-man, CHEN Hai-long. Numericalsimulationofdynamicresponseofwarshipstructures subjectedtounderwaterexplosionshockwavesandbubbles[J]. Explosion And Shock Waves, 2011, 31(4): 367-372. doi: 10.11883/1001-1455(2011)04-0367-06

Citation:

WANG Shi-ping, SUN Shi-li, ZHANG A-man, CHEN Hai-long. Numericalsimulationofdynamicresponseofwarshipstructures subjectedtounderwaterexplosionshockwavesandbubbles[J]. Explosion And Shock Waves, 2011, 31(4): 367-372. doi: 10.11883/1001-1455(2011)04-0367-06

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Numericalsimulationofdynamicresponseofwarshipstructures subjectedtounderwaterexplosionshockwavesandbubbles

doi: 10.11883/1001-1455(2011)04-0367-06

1.
SchoolofShipbuildingEngineering,HarbinEngineeringUniversity,

Funds:

NationalNaturalScienceFoundationofChina(51009035,50939002)

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Corresponding author: WANG Shi-ping
Publish Date: 2011-07-25

Abstract

Abstract

Aimedatthedifficultiesofunderwaterexplosionloadandinstantaneousfluid-structureinteractioninthenumericalsimulationofdynamicresponseofwarshipstructures, basedontheGeers- Huntermodel,amodifiedmodelforcalculatingtheunderwaterexplosionbubbleloadwasproposed bycombiningwiththeboundaryelementmethod.Toovercometheshortcomingofthesecond-order doubly-asymptoticapproximation(DAA2)methodintreatingthefluid-structureinteractionwithlow frequencyandlargeamplitudemotion,anonlineardoubleasymptoticapproximation(NDAA)method waspresentedbyconsideringthenonlinearfactorssuchastheviolentlow-frequencyresponseofthe warshipanditsfreesurfaceeffect.AndacodewasdevelopedbycombiningthepresentedNDAA methodwiththefiniteelementcodetonumericallyinvestigatethedynamicresponseofwarshipstructuressubjectedtounderwaterexplosionshock avesandbubbles.Themeanerrorbetweennumerical andexperimentalverticalvibrationvelocitiesatthedifferentpositionsisabout16.8%,anditdisplays thatthepresentedNDAA methodisfeasible.
- mechanicsofexplosion,
- NDAAmethod