Confinement effect of inert materials on insensitive high explosives

Yu Ming; Zhang Wen-hong; Yu Heng

doi:10.11883/1001-1455(2014)03-0300-07

Volume 34 Issue 3

Aug. 2014

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Article Navigation > Explosion And Shock Waves > 2014 > 34(3): 300-306

Yu Ming, Zhang Wen-hong, Yu Heng. Confinement effect of inert materials on insensitive high explosives[J]. Explosion And Shock Waves, 2014, 34(3): 300-306. doi: 10.11883/1001-1455(2014)03-0300-07

Citation:

Yu Ming, Zhang Wen-hong, Yu Heng. Confinement effect of inert materials on insensitive high explosives[J]. Explosion And Shock Waves, 2014, 34(3): 300-306. doi: 10.11883/1001-1455(2014)03-0300-07

Yu Ming, Zhang Wen-hong, Yu Heng. Confinement effect of inert materials on insensitive high explosives[J]. Explosion And Shock Waves, 2014, 34(3): 300-306. doi: 10.11883/1001-1455(2014)03-0300-07

Citation:

Yu Ming, Zhang Wen-hong, Yu Heng. Confinement effect of inert materials on insensitive high explosives[J]. Explosion And Shock Waves, 2014, 34(3): 300-306. doi: 10.11883/1001-1455(2014)03-0300-07

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Confinement effect of inert materials on insensitive high explosives

doi: 10.11883/1001-1455(2014)03-0300-07

Institute of Applied Physics and Com putational Mathematics, Beijing 100094, China

Funds: Supported by the National Natural Science Foundation of China (11272064)

Received Date: 2012-10-10
Rev Recd Date: 2013-02-22
Publish Date: 2014-05-25

Abstract

Abstract

In order to study the confinement effect of inert materials on insensitive high explosives, the improved shock polar curve and phenomenological reaction model were employed.The confinement types were categorized by the improved shock polar theory, which was built on the leading shock wave based on the detonation ZND model, and adopted JWL equation of state in unreacted explosives and p(ρ, T)equation of state in inert material.If the sonic velocity of the confinement material is less than the CJ velocity of an explosive, the shock polar theory can be utilized.In general, there are several types of interactions that give a"match"of the pressure and streamline-deflection across the interface between IHE and confinement material.A two-dimensional Lagrangian hydrodynamic method with three-term Lee-Tarver rate law is used to numerically simulate all types of confinement interactions.The important characters of confinement material include:compressibility, thickness, the representative assembled layers, such as bakelite-iron and iron-beryllium (iron close to the explosive).
- mechanics of explosion,
- confinement effect,
- improved shock polar curve,
- inert material,
- insensitive high explosive,
- three-term ignition-growth rate law

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References(16)

References

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