Thematerialpointmethodforshock-to-detonationtransitionof

heterogeneoussolidexplosive

ZHANG Zhong; CHEN Wei-dong; YANG Wen-miao

doi:10.11883/1001-1455(2011)01-0025-06

Volume 31 Issue 1

May 2014

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WANG Chang-jian, XU Sheng-li, FEI Li-sen. Flow-field visualization for gaseous detonation diffraction experiments[J]. Explosion And Shock Waves, 2006, 26(1): 27-32. doi: 10.11883/1001-1455(2006)01-0027-06

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ZHANG Zhong, CHEN Wei-dong, YANG Wen-miao. Thematerialpointmethodforshock-to-detonationtransitionof heterogeneoussolidexplosive[J]. Explosion And Shock Waves, 2011, 31(1): 25-30. doi: 10.11883/1001-1455(2011)01-0025-06

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Thematerialpointmethodforshock-to-detonationtransitionof heterogeneoussolidexplosive

doi: 10.11883/1001-1455(2011)01-0025-06

1.
CollegeofAstronauticsandCivilEngineering,HarbinEngineeringUniversity,

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NationalNaturalScienceFoundationofChina(10772055)

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Corresponding author: CHEN Wei-dong
Publish Date: 2011-01-25

Abstract

Abstract

Withtheignitionandgrowth model,thematerialpointmethod (MPM)computercode calledMPM-SDT wasdevelopedinFORTRAN90,and wasusedtocomputeshock-to-detonation transitionproblems.TheresultsobtainedbyMPM,traditionalalgorithmsandexperimentwerecompared. Thefeasibilityofusingthematerialpointmethodtosolveshock-to-detonationtransitionproblemswasconfirmed. MPMavoidsthemeshdistortionandtanglingissuesassociatedwithLagrangian methodsandtheadvectionerrorsassociatedwithEulerianmethods.Fragmentsofdifferentmaterial (steel,copper,tungsten,etc.)impactingshieldedexplosiveweresimulated.Theinitiationbehaviour oftungstenisthebest,copperisthesecond,andsteelistheworst.Thecriticaldetonatingvelocityis proportionaltothethicknessofshield.
- mechanicsofexplosion,
- shocktodetonationtransition,
- materialpointmethod,
- ignition andgrowthmodel

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