Dynamic analysis of drop weight impact rocket propellant ignition

Duffy, K. P.; Baker, Patrick J.; Barr, E. S.; Mellor, A. M.

doi:10.2514/6.1991-2193

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…Dynamic finite element analysis of a drop weight impact has been conducted for parametric studies. 19 Friedman numerically correlated thermal explosion with the impact sensitivities of several explosives. 20 Francis and Cuthbert used finite element analysis of the drop-weight test to calculate the temperature in the localized zones near the sample periphery.…”

Section: Introductionmentioning

confidence: 99%

Experiments and modeling of HMX granular explosives subjected to drop-weight impact

Huang

Zhang

2012

RSC Adv.

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The drop-weight impacts on a thin layer of cyclotetramethylene tetranitramine (HMX) explosive particles have been performed. The drop-weight impact machine is equipped with high-speed photographic techniques. Effects of drop heights and the amount of particles on compaction, deformation, and thermal responses were investigated. Considering the contact plasticity, friction, melting, fracture, as well as chemical reaction, an analytical model based on heating and kinematics equations for a single layer of explosive particles has been developed. The calculated average pressure, loading time and time-to-ignition agree well with experimental measured ones. Threshold conditions for ignition can be derived from the predicted temperature history curves. Individual particles' pressure-strain exhibited stress-strain-like relationships, from which close relations can be found between experimental phenomena and the material's softening/hardening characteristics.

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Section: Introductionmentioning

confidence: 99%

Experiments and modeling of HMX granular explosives subjected to drop-weight impact

Huang

Zhang

2012

RSC Adv.

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Modeling of Ignition in a Single Layer of Impacted Energetic Crystals

Wu¹,

Huang²,

Huang³

2013

Propellants Explo Pyrotec

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A thermal‐mechanical model for the ignition of a layer of cyclotetramethylene tetranitramine (HMX) particles under drop‐weight impact was developed. Considering the micro‐particle plasticity, frictional heating, melting, fracture, and chemical reaction at particle level, effects of loading parameters and sample characteristics on ignition and mechanical responses were discussed. The threshold values for ignition to occur under different loading conditions and various material parameters can be predicted. The model was validated by comparing experimental measured and calculated mean pressure‐strain curves, which showed two turning points due to localized fragmentation and melting. Relationships between thermal and mechanical responses at the particle level were examined.

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Unixial compression testing of M30 and JA2 gun propellants using a statistical design strategy

Gazonas

Ford

1992

Experimental Mechanics

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Dynamic analysis of drop weight impact rocket propellant ignition

Cited by 4 publications

References 5 publications

Experiments and modeling of HMX granular explosives subjected to drop-weight impact

Experiments and modeling of HMX granular explosives subjected to drop-weight impact

Modeling of Ignition in a Single Layer of Impacted Energetic Crystals

Unixial compression testing of M30 and JA2 gun propellants using a statistical design strategy

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