Numerical and experimental study on cyclotrimethylenetrinitramine/aluminum explosives in underwater explosions

Zhao, Qian; Nie, Jianxin; Wang, Qiushi; Zhou, Zhiqiang; Jiao, Qingze

doi:10.1177/1687814016667905

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…Hamashima et al [6] obtained the JWL parameters of the detonation product of the cylindrical and spherical high explosives SEP which was not confined either by the shell through the nonideal detonation of the underwater explosion. Zhao et al [7] researched the energy output characteristics of cyclotrimethylenetrinitramine-(RDX-) based aluminized explosives under the water with different aluminum content.…”

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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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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“…More and more emphases are put on the reliability and safety of the system. While expert system still has such issues like interpersonal interaction friendly, knowledge representation method incomplete and knowledge acquisition inflexible [1], in recent years, along with the rapid development of processing technology, artificial intelligence technology, control theory and other basic sciences, the fault diagnosis of the hydraulic system has received wide attention and made important advances, at home and abroad [2].…”

Section: Introductionmentioning

confidence: 99%

Research on Real-Time Monitoring and Data Management of Hydraulic Test System Based on LabVIEW

Liu

Zhang

et al. 2014

AMM

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For real-time data management needs of multiple components, sets and workshops hydraulic experimental platforms, a new distributed system of real-time monitoring and data management based on LabVIEW was developed, by solving following key technologies: hydraulic data real-time monitoring and acquisition at remote distance, data management and reappearance, fault diagnosis expert system in test process. Through the experiment, monitoring in real-time and the operability of data management are confirmed.

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Influence of Al content and surrounding medium on the energy output of cyclotrimethylenetrinitramine (RDX)/Al/wax explosives

Zhou

Chen

Yuan

et al. 2021

Journal of Applied Physics

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RDX/Al/wax explosives (RDX = cyclotrimethylenetrinitramine; (O2NNCH2)3) were studied in experiments designed to elucidate the effects of Al content and the surrounding medium on the energy output of aluminized explosives. Explosives with Al contents of 0%, 15%, and 30% were compared in water and concrete media. Results indicate that the explosive's bubble energy in water is higher (by 66%–90%) than the expansion energy in concrete. Heat, sound, and other energies in water (0.28–0.84 MJ kg–1) were much lower than that in concrete (1.49–2.81 MJ kg–1). For shock wave energy, the different media have much less impact on shock wave energy, with that in water being only 0.7%–7% higher than in concrete. The test data presented in this paper improve our understanding of how Al and the surrounding medium contribute to the energy output of the explosive, which is of great significance for improving the energy utilization efficiency of aluminized explosives in water and concrete.

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Numerical and experimental study on cyclotrimethylenetrinitramine/aluminum explosives in underwater explosions

Cited by 5 publications

References 14 publications

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

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

Research on Real-Time Monitoring and Data Management of Hydraulic Test System Based on LabVIEW

Influence of Al content and surrounding medium on the energy output of cyclotrimethylenetrinitramine (RDX)/Al/wax explosives

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