Transient reflection of a plane shock wave from a rigid wall

Степанова, Галина

doi:10.1007/bf00789033

Cited by 2 publications

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“…11). The calculated values of the specific pressure impulse i obtained by integrating the analytical dependence p(t) [58] with the measured value of t 0 used as a prescribed parameter agree with the data of ballistic measurements within the error of the latter (Fig. 12).…”

Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 52%

“…6 and 13). High-velocity filming of the explosion of the volume-distributed charge shows that explosion products intensely mix with air in the shock tube, and the motion of the polar point due to deformation of an aluminum plate by a reflected SW corresponds to the de- (2) in the case of explosion of a planar HE charge in the shock tube: the points show the data measured in [52,53], and the curves refer to the calculations performed in [52,53] by the strong explosion model developed in [57,58].…”

Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 98%

“…In the range x/∆ = 1000-2000, the experimental curves p(t) (Fig. 9) both in the incident SW and in the unsteady SW reflected from a massive target (rigid wall) are described by the solutions [57,58] of the problem of a strong explosion with the use of the measured value of t 0 as a prescribed parameters. The analytical solution [58] of the problem of reflection of a planar SW induced by a strong explosion from an absolutely rigid wall was obtained under the assumption of a zero pressure gradient behind the reflected SW front.…”

Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 99%

“…Specific pressure impulse versus the dimensionless distance to the rigid wall in the case of an explosion of a planar sheet HE charge in the shock tube: ρ and D are the HE density and detonation velocity; the points are the data of ballistic measurements, the solid curve is the integrated analytical dependence p(t)[58]: i =…”

mentioning

confidence: 99%

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Pulsed Loading of Objects during Intense Expansion of Products of Explosion of Solid Explosives (Review)

Lin

2005

Combust Explos Shock Waves

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Specific features of pulsed loading of objects during intense expansion of explosion products of solid explosives are considered. Parameters of the semi-empirical equation of state of explosion products in the density range that has not been adequately considered are given. Results of experimental investigations of reflection of unsteady shock waves from a rigid wall and their effect on thin targets are summarized. Processes that occur under moderate-intensity dynamic impacts on solid and porous media are described: multiple collisions of solids with rigid targets, shock-induced coalescence of nanodiamonds, and emission effects due to expansion of explosion products into an evacuated volume, air, and inert gas.

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Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 52%

Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 98%

Section: Specific Features Of Pulsed Mechanical Action On Targetsmentioning

confidence: 99%

mentioning

confidence: 99%

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Pulsed Loading of Objects during Intense Expansion of Products of Explosion of Solid Explosives (Review)

Lin

2005

Combust Explos Shock Waves

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Decay behavior and internal interactions of regularly reflected spherical blast waves

Almustafa,

Nehdi

2024

Physics of Fluids

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Blast wave reflection is a critical area in military and infrastructure defense, converging shock dynamics, and colliding blast waves. While irregular blast reflections have garnered remarkable attention, research on regularly reflected (RR) blast waves remains comparatively limited. This study presents a detailed literature on shortcomings of post-reflection quantities of RR blast waves and aims to bridge this gap by extensively analyzing RR behaviors of spherical blast waves against a planar surface in air via numerical methods. With 31 scenarios involving a 1 kg charge and scaled distances from 0.5 to 4.0 m/kg1/3, comprehensive field data on parameters including pressure, density, and velocity were gathered using a fan-like gauge array. A dedicated program for tracking the RR shock front was developed, enabling precise trajectory detection and detailed quantitative analyses of RR wave decay. First, accurate empirical trajectory equations for RR waves were formulated along its normal axis. Second, spatial decay analysis was conducted, revealing consistent decay rates for each RR field parameter under 1 m/kg1/3 and diminishing decay rates beyond this threshold. Third, parameter profiles preceding RR shock fronts at various post-reflection distances were examined, while discrepancies and complexities against generalized profiles were uncovered. Qualitatively, this study identified four internal interactions within the reflection phenomenon, categorized by scaled distance ranges, and elucidated the secondary wave's impact on RR wave propagation. The comprehensive quantitative and qualitative findings in this work offer profound insights into blast wave dynamics, addressing several gaps on RR blast wave behaviors and laying a foundation for understanding more complex blast reflection phenomena crucial in various domains.

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Transient reflection of a plane shock wave from a rigid wall

Cited by 2 publications

References 1 publication

Pulsed Loading of Objects during Intense Expansion of Products of Explosion of Solid Explosives (Review)

Pulsed Loading of Objects during Intense Expansion of Products of Explosion of Solid Explosives (Review)

Decay behavior and internal interactions of regularly reflected spherical blast waves

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