Details
| Original language | English |
|---|---|
| Pages (from-to) | 1800-1814 |
| Number of pages | 15 |
| Journal | Propellants, Explosives, Pyrotechnics |
| Volume | 46 |
| Issue number | 12 |
| Early online date | 12 Nov 2021 |
| Publication status | Published - 3 Dec 2021 |
Abstract
The prediction of the brisance performance of the aluminized explosive detonation, which involves complicated multiphase and multiphysics flow, is a difficult problem to tackle. In this paper, the detonation and brisance performance of aluminized HMX explosives is investigated using the density-adaptive smoothed particle hydrodynamics methodology. The ignition and growth model was incorporated in smoothed particle hydrodynamics to calculate the pressure generated by the detonation of aluminized explosive, and the after-burning combustion model was used to obtain the released energy caused by the combustion of aluminium particles. The elastic-perfectly plastic model and Tillotson equation of state were employed to predict the dynamic behavior of metal material. In addition, the density-adaptive method is employed to deal with the multiphase interface with a large density ratio. Firstly, the equations of state and constitutive models are verified by two benchmark cases, namely three-dimensional detonation of PBX 9501 explosive and three-dimensional aluminium-aluminium high-velocity impact. Subsequently, the detonation velocity and peak pressure of aluminized HMX with different mass fractions of aluminium powder are investigated. In the end, the interaction between the steel confiner and the detonation of aluminized explosive is conducted in order to study the brisance performance of aluminized explosive. The numerical results obtained from smoothed particle hydrodynamics are in good agreement with the experimental data, which shows that the detonation and the ballistic performance of the condensed explosive can be captured by density-adaptive smoothed particle hydrodynamics very well.
Keywords
- after-burning model, aluminized explosive, ignition and growth model, smoothed particle hydrodynamics
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
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In: Propellants, Explosives, Pyrotechnics, Vol. 46, No. 12, 03.12.2021, p. 1800-1814.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerical Simulation of Detonation and Brisance Performance of Aluminized HMX Using Density-Adaptive SPH
AU - Chen, Jian Yu
AU - Feng, Dian Lei
AU - Wang, Guang Yu
AU - Gao, Fei
AU - Peng, Chong
N1 - Funding Information: The authors gratefully acknowledge the efforts and suggestions of the reviewers to improve the manuscript. This research was supported by the Natural Science Foundation of Jiangsu province of China (No. BK20210319) and the National Natural Science Foundation of China (No. 12002171).
PY - 2021/12/3
Y1 - 2021/12/3
N2 - The prediction of the brisance performance of the aluminized explosive detonation, which involves complicated multiphase and multiphysics flow, is a difficult problem to tackle. In this paper, the detonation and brisance performance of aluminized HMX explosives is investigated using the density-adaptive smoothed particle hydrodynamics methodology. The ignition and growth model was incorporated in smoothed particle hydrodynamics to calculate the pressure generated by the detonation of aluminized explosive, and the after-burning combustion model was used to obtain the released energy caused by the combustion of aluminium particles. The elastic-perfectly plastic model and Tillotson equation of state were employed to predict the dynamic behavior of metal material. In addition, the density-adaptive method is employed to deal with the multiphase interface with a large density ratio. Firstly, the equations of state and constitutive models are verified by two benchmark cases, namely three-dimensional detonation of PBX 9501 explosive and three-dimensional aluminium-aluminium high-velocity impact. Subsequently, the detonation velocity and peak pressure of aluminized HMX with different mass fractions of aluminium powder are investigated. In the end, the interaction between the steel confiner and the detonation of aluminized explosive is conducted in order to study the brisance performance of aluminized explosive. The numerical results obtained from smoothed particle hydrodynamics are in good agreement with the experimental data, which shows that the detonation and the ballistic performance of the condensed explosive can be captured by density-adaptive smoothed particle hydrodynamics very well.
AB - The prediction of the brisance performance of the aluminized explosive detonation, which involves complicated multiphase and multiphysics flow, is a difficult problem to tackle. In this paper, the detonation and brisance performance of aluminized HMX explosives is investigated using the density-adaptive smoothed particle hydrodynamics methodology. The ignition and growth model was incorporated in smoothed particle hydrodynamics to calculate the pressure generated by the detonation of aluminized explosive, and the after-burning combustion model was used to obtain the released energy caused by the combustion of aluminium particles. The elastic-perfectly plastic model and Tillotson equation of state were employed to predict the dynamic behavior of metal material. In addition, the density-adaptive method is employed to deal with the multiphase interface with a large density ratio. Firstly, the equations of state and constitutive models are verified by two benchmark cases, namely three-dimensional detonation of PBX 9501 explosive and three-dimensional aluminium-aluminium high-velocity impact. Subsequently, the detonation velocity and peak pressure of aluminized HMX with different mass fractions of aluminium powder are investigated. In the end, the interaction between the steel confiner and the detonation of aluminized explosive is conducted in order to study the brisance performance of aluminized explosive. The numerical results obtained from smoothed particle hydrodynamics are in good agreement with the experimental data, which shows that the detonation and the ballistic performance of the condensed explosive can be captured by density-adaptive smoothed particle hydrodynamics very well.
KW - after-burning model
KW - aluminized explosive
KW - ignition and growth model
KW - smoothed particle hydrodynamics
UR - http://www.scopus.com/inward/record.url?scp=85118941782&partnerID=8YFLogxK
U2 - 10.1002/prep.202100214
DO - 10.1002/prep.202100214
M3 - Article
AN - SCOPUS:85118941782
VL - 46
SP - 1800
EP - 1814
JO - Propellants, Explosives, Pyrotechnics
JF - Propellants, Explosives, Pyrotechnics
SN - 0721-3115
IS - 12
ER -