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Volume 32 Issue 3
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Article Navigation >  Explosion And Shock Waves  > 2012  >  32(3): 316-322
LI Lei, SHEN Zhao-wu, LI Xue-ling, NI Xiao-jun. ApplicationofSPH methodtonumericalsimulationofshapedchargejet[J]. Explosion And Shock Waves, 2012, 32(3): 316-322. doi: 10.11883/1001-1455(2012)03-0316-07
Citation: LI Lei, SHEN Zhao-wu, LI Xue-ling, NI Xiao-jun. ApplicationofSPH methodtonumericalsimulationofshapedchargejet[J]. Explosion And Shock Waves, 2012, 32(3): 316-322. doi: 10.11883/1001-1455(2012)03-0316-07
shu

ApplicationofSPH methodtonumericalsimulationofshapedchargejet

doi: 10.11883/1001-1455(2012)03-0316-07
  • 1.

    Departmentof ModernMechanics,UniversityofScienceandTechnologyofChina,

  • 2.

    Hefei230031,Anhui,China;

Funds:

NationalNaturalScienceFoundationofChina(51134012,51174183)

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  • Corresponding author: LI Lei
  • Publish Date: 2012-05-25
    Abstract
  • Basedonthesmoothedparticlehydrodynamics(SPH)methodinLS-DYNAsoftware,the shapedchargejetprocesswassimulated.Andthemechanismoftheshapedchargejetwasdiscussed accordingtothenumericalsimulationresults.Toanalyzetheaccuracy,effectivenessandsuperiority aboutthismethod,aswellastheerrorbroughtbydifferentinitialnumbersN oftouchingneighbors perparticle,thenumericalsimulationresultswerecomparedwithtwo-dimensional(2D)finiteelementresultsandtheoreticalcalculations. Theinvestigatedresultsshowthatsomeproblems,suchas griddistortion,windingandcontactpenetrationwhichoftenhappeninthefiniteelementmethod,can beavoidedintheSPH method,sothecalculationprocessbytheSPH methodisstable,andthecalculationprecisionishigherthanthatbythe2Dfiniteelementmethod. Therelativeerrorofthejettip velocityandthejetlengthcalculatedbytheSPH methodcomparedwiththefiniteelementresultsand theoreticalcalculationsarebothlowerthanfivepercent,thereforetheSPH methodisadaptablein multi-material,largedeformationproblemssuchasshapedcharges.ThemostidealNisfrom600to 1800,inwhichtherelativeerrorislowerthan3%andthecomputationalefficiencyishigh.
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