AnewcoupledSPH-FEMalgorithmand

itsapplicationtoimpactdynamics

ZHANG Zhi-chun; QIANG Hong-fu; GAO Wei-ran

doi:10.11883/1001-1455(2011)03-0243-07

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ZHANG Zhi-chun, QIANG Hong-fu, GAO Wei-ran. AnewcoupledSPH-FEMalgorithmanditsapplicationtoimpactdynamics[J]. Explosion And Shock Waves, 2011, 31(3): 243-249. doi: 10.11883/1001-1455(2011)03-0243-07

Citation:

ZHANG Zhi-chun, QIANG Hong-fu, GAO Wei-ran. AnewcoupledSPH-FEMalgorithmand itsapplicationtoimpactdynamics[J]. Explosion And Shock Waves, 2011, 31(3): 243-249. doi: 10.11883/1001-1455(2011)03-0243-07

ZHANG Zhi-chun, QIANG Hong-fu, GAO Wei-ran. AnewcoupledSPH-FEMalgorithmanditsapplicationtoimpactdynamics[J]. Explosion And Shock Waves, 2011, 31(3): 243-249. doi: 10.11883/1001-1455(2011)03-0243-07

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AnewcoupledSPH-FEMalgorithmand itsapplicationtoimpactdynamics

doi: 10.11883/1001-1455(2011)03-0243-07

Funds:

NationalBasicResearchProgramofChina(973Program)(61338)

ProgramforNewCenturyExcellentTalentsinUniversity(NCET-4138C2XB)

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Corresponding author: QIANG Hong-fu
Publish Date: 2011-05-25

Abstract

Abstract

Thecouplingofsmoothedparticlehydrodynamics(SPH)withthefiniteelementmethod (FEM)ispresentedtomakefulluseofthesuperiorityofSPHindealingwithlargedeformationand thehighaccuracyofFEM.ThecoupledSPH-FEMalgorithmemploysSPHparticlesinthehigherdistortionregionsandfiniteelementsinthelowerdistortionregions. Inthecoupledinterface,SPHparticlesareattachedtofiniteelements. BackgroundparticlesareassignedinthepositionofFEnodes, andFEnodesareaddedtoSPHneighborlist.TheboundaryeffectofSPHisavoided,andthecontinuityoftheinterfaceisguaranteed. Theperforationofacylindricalsteelprojectileimpactingaplate targetissimulatedin3DusingthecoupledSPH-FEMalgorithm.TheJohnson-Cookmaterialmodel withdamageeffectandGrneisenequationofstateareemployedforthetarget,andthecomputedresultsshowgoodagreementwiththeexperimentaldata.
- solidmechanics,
- SPH-FEMcouplingalgorithm,
- backgroundparticle,
- impact