Energetic Materials Based on W/PTFE/Al: Thermal and Shock-Wave Initiation of Exothermic Reactions

Saikov, I. V.; Seropyan, S. A.; Malakhov, А. Yu.; Saikova, G. R.; Денисов, И. В.; Петров, Е. В.

doi:10.3390/met11091355

Cited by 7 publications

(2 citation statements)

References 48 publications

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“…It is related not only to the action of shock wave, but also to the characteristics of targets and some random factors. When the steel foil has a certain distance from the high explosive charge, its deformation deflection is related to the free vibration period of the structure itself [25, 26]. The damage of steel foil driven by explosion recorded by high‐speed camera is shown in Figure 11.…”

Section: Resultsmentioning

confidence: 99%

Study on the blast impulse characters of high explosive charge with reactive metal casing

Zhang

Xiong

et al. 2023

Propellants Explo Pyrotec

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This paper focuses on the blast impulse characters of high explosive charge with reactive metal casing. Explosive driving experiments were carried out for high explosive charge with different thicknesses of reactive metal casings and traditional 2 A12 aluminum alloy casings. The power of charge with the two casings was evaluated by analyzing the deformation of 0.3 mm thick Q235 steel foil under the action of the shock wave. Based on the principle of energy conservation, the deflection calculation model of steel foil under explosion load was established. The maximum deflection of plastic deformation of steel foil at different distances under the action of explosive loading caused by the charge with different material casing was calculated. The characteristics of the steel foil damaged by the explosion shock wave generated by the charge with a reactive metal casing were analyzed and compared with the blast impulse of the charge with the traditional 2 A12 aluminum alloy casing. The results show that, with the increase of the thickness of the reactive metal casing, the maximum deflection of the plastic deformation of the steel foil increased, that is, the damage effect to the target improved. The theoretical model of the maximum deflection of plastic deformation of steel foil under explosive loading can accurately predict the deflection of steel foil under explosive loading, and provide a theoretical basis for evaluating the damage effect of reactive materials driven by the explosion. The experimental results showed that the reactive metal casing has a good application prospect in realizing high‐efficiency damage.

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Section: Resultsmentioning

confidence: 99%

Study on the blast impulse characters of high explosive charge with reactive metal casing

Zhang

Xiong

et al. 2023

Propellants Explo Pyrotec

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“…Reactive materials based on polytetrafluoroethylene (PTFE), such as PTFE/Al, PTFE/Ti, PTFE/Cu, and PTFE/Al/W, possess certain mechanical strengths and can release chemical energy upon impact, initiating quasi-explosive reactions and releasing a significant amount of gaseous products. Over the past two decades, these materials have been widely applied in defense, aerospace, and civilian fields [15,16]. With the growing prevalence of reactive materials, numerous scholars have conducted a series of studies on PTFE-based reactive materials, including their mechanical properties [17,18] and energy-release characteristics [19,20].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Characteristics of Composite Concrete Structures Subjected to Reactive Jet Impact

Su,

Li,

Zhang

et al. 2024

Buildings

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Composite concrete structures, commonly found in urban infrastructures, such as highways and runways, are pivotal research object in the protection field. To study the dynamic response of composite concrete structures subjected to reactive jet penetration coupled with an explosive effect, a full-scale damage experiment of composite structures under the action of 150 mm caliber shaped charges was performed, to derive the dynamic damage modes of different concrete thicknesses under the combined kinetic and chemical energy damage effects. The results indicated that under aluminum jet penetration, concrete layers exhibited minor funnel craters and penetration holes. However, concrete layers displayed a variety of damage modes, including central penetration holes, funnel craters, bulges, and radial/circumferential cracks when subjected to the PTFE/Al jet. The area of the funnel crater expanded as the thickness of the concrete increased, while the height of the bulge and the number of radial cracks decreased. The diameter of penetration holes increased by 76.9% and the area of funnel crater increased by 578% in comparison to Al jet penetration damage. A modified-RHT concrete model that reflected concrete tensile failure was established, utilizing AUTODYN. Segmented numerical simulations of damage behavior were performed using the FEM-SPH algorithm and a restart approach combined with reactive jet characteristics. The spatial distribution characteristic of the reactive jet and the relationship between kinetic penetration and explosion-enhanced damage were obtained by the simulation, which showed good concordance with the experimental results. This study provides important reference data and a theoretical basis for the design of composite concrete structures to resist penetration and explosion.

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SPH simulation of shock-induced chemical reactions in reactive powder mixtures

Cherepanov,

Ivanova,

Zelepugin

2024

Materials Today Communications

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Energetic Materials Based on W/PTFE/Al: Thermal and Shock-Wave Initiation of Exothermic Reactions

Cited by 7 publications

References 48 publications

Study on the blast impulse characters of high explosive charge with reactive metal casing

Study on the blast impulse characters of high explosive charge with reactive metal casing

Dynamic Response Characteristics of Composite Concrete Structures Subjected to Reactive Jet Impact

SPH simulation of shock-induced chemical reactions in reactive powder mixtures

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