Shock and Shear Effects in Explosives Due to Impact

Liang, Deshou; Chou, Pei Chi; Hashemi, Javad

doi:10.1016/b978-0-444-89732-9.50078-9

Shock Compression of Condensed Matter–1991 1992

DOI: 10.1016/b978-0-444-89732-9.50078-9

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Shock and Shear Effects in Explosives Due to Impact

Deshou Liang

Pei Chi Chou

Javad Hashemi

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1993

1994

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Cited by 3 publications

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Impact Initiated Annular Retonation Wave in explosive

Chou¹,

Roslund

Liang

1993

Propellants Explo Pyrotec

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Experiments conducted at the White Oak Laboratory with a pentolite explosive charge impacted by a flat‐ended cylinder of mild steel, showed a hole drilled at the center of the impactor, if the explosive was detonated. A computer simulation was carried out with the finite element hydrocode DEFEL and the Forest‐Fire reaction‐rate model. Computed results verified the hypothesis that the annular retonation was the cause of the drilled hole. The detonation started at a distance of about 10 mm from the impact surface, then developed into an annular shape and propagated inwards and backwards, to the axis of symmetry and the impact surface. The converging wave generated a pressure of about 100 GPa near the center of its impact surface, which is believed to be the real cause of the hole.

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Impact Initiated Annular Retonation Wave in explosive

Chou¹,

Roslund

Liang

1993

Propellants Explo Pyrotec

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Shock and shear initiation of explosive

Chou

Liang

Flis³

1991

Shock Waves

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Abstract. Three reaction-rate models, Forest Fire, Arrhenius and a combined Forest Fire and Arrhenius, are incorporated in the hydrocode DEFEL. Simulations with this code for PBX-9404 explosive for bare and covered explosives by fragment impact are made. Results confirm the well-known shock-initiation theory for bare explosives. For explosives with a thick cover plate, code results show macroscopic shear initiation, as proposed by Howe (1985) and Frey (1981).

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Viscosity and heat conduction effects in pore collapse

Chou

Ritman

Liang

1994

Mechanics of Materials

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Shock and Shear Effects in Explosives Due to Impact

Cited by 3 publications

References 4 publications

Impact Initiated Annular Retonation Wave in explosive

Impact Initiated Annular Retonation Wave in explosive

Shock and shear initiation of explosive

Viscosity and heat conduction effects in pore collapse

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