Numerical study of the postcombustion effects on the underwater explosion of an aluminized explosive by a novel nonisentropic model for the detonation products

Chao, Yang; Li, Xiaojie; Yan, Honghao; Wang, Xiaohong; Wang, Yuxin

doi:10.1080/07370652.2018.1556363

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…For example, Feng et al. studied the bubble pulsation by underwater explosion of CL‐20‐based explosives and CL‐20‐based aluminized explosive [17]. Sun et al.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have carried out in-depth research on the reaction mechanism and influencing factors of aluminized explosives. For example, Feng et al studied the bubble pulsation by underwater explosion of CL-20-based explosives and CL-20-based aluminized explosive [17]. Sun et al studied the underwater energy output characteristics of CL-20/ Al/AP explosives with Al/O ratio, and analysed the variation rule of explosives on underwater shock wave energy, underwater bubble energy and underwater energy output structure [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Al/O ratio on underwater explosion energy characteristics of CL‐20‐based aluminized explosives

Yao

Zhao

JIA

et al. 2023

Propellants Explo Pyrotec

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To study the underwater explosion energy characteristics of CL-20-based aluminized explosives with different Al/O ratio, underwater detonation parameters of explosives, including the shock wave peak pressure, the decay time, the bubble pulsation period, the shock wave energy and the bubble energy at 1 m, were measured by a series of underwater explosion experiments. The calculation model of CL-20-based aluminized explosive in the pool was established by using Ansys LS-DYNA software and was calculated the shock wave energy and bubble pulsation period. The results showed that Al/O ratio significantly changed the energy output structure of CL-20-based aluminized explosives. With increasing Al/O ratio, the proportion of shock wave energy in the total energy decreased, while the proportion of bubble energy increased.When Al/O ratio was 0.35, the shock wave peak pressure and shock wave energy of the explosive were the largest, and when the ratio was 0.6, the bubble period and total energy reach their maximum; when the ratio was 0.94, the bubble energy and the bubble pulsation reached the maximum. The experimental values are in good agreement with the simulation results, and the model can be used to estimate the underwater detonation parameters of CL-20-based aluminized explosives with different Al/O ratio.

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“…For example, Feng et al. studied the bubble pulsation by underwater explosion of CL‐20‐based explosives and CL‐20‐based aluminized explosive [17]. Sun et al.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Al/O ratio on underwater explosion energy characteristics of CL‐20‐based aluminized explosives

Yao

Zhao

JIA

et al. 2023

Propellants Explo Pyrotec

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“…In the existing researches, few papers have involved the expansion of the cylinder in the water medium. Yang et al [5] investigated the detonation and postcombustion effects on the underwater explosion of an aluminized explosive which was not confined by any metallic shell with a meshless method, the MOC method. It focused on the nonisentropic flow due to postcombustion effect which affects the shock trajectory and gas-water interface.…”

Section: Introductionmentioning

confidence: 99%

A Comparison Investigation on Cylinder Test in Different Ambient Media by Experiment and Numerical Simulation

Zhang

Shen

et al. 2020

International Journal of Aerospace Engineering

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When the detonation reaction occurs after the charge in the warhead is ignited, the propagation of the detonation wave and the expansion of the detonation product will interact with the wrapped metallic shell and cause the shell material to accelerate, extremely deform, and eventually rupture, which is a typical strong fluid-structure interaction problem. In this paper, a comparison investigation on a cylinder test in different ambient media was implemented by experiment and numerical simulation, respectively. In the experimental test, the attention was paid to discussing the differences of the accelerating process of the cylinder metal wall, the expansion modes, and the fragment shape of the cylinder due to the medium with different shock wave impedance which surrounds the cylinder shell. For the numerical simulation, a coupling scheme of a meshless method and finite element method called the coupled finite element material point method was used to reproduce the cylinder expansion problem driven by explosive sliding detonation where the interaction between the cylinder wall and the explosive/detonation product is enforced by using a point-to-surface contact scheme to accurately achieve contact and separation between material particles and finite elements. Lastly, the macroscopic and microscopic states of the cylinder failure were compared and discussed for further discussion.

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A novel data-analysis method for underwater explosion tests by inverse modeling

Chao

Zheng

Liu

et al. 2021

Applied Mathematical Modelling

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Numerical study of the postcombustion effects on the underwater explosion of an aluminized explosive by a novel nonisentropic model for the detonation products

Cited by 8 publications

References 20 publications

Effect of Al/O ratio on underwater explosion energy characteristics of CL‐20‐based aluminized explosives

Effect of Al/O ratio on underwater explosion energy characteristics of CL‐20‐based aluminized explosives

A Comparison Investigation on Cylinder Test in Different Ambient Media by Experiment and Numerical Simulation

A novel data-analysis method for underwater explosion tests by inverse modeling

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