Using shaped charges with a “magnetic cut-off” for testing anti-meteoroid shields

Selivanov, V. V.; Федоров, С. В.; Бабкин, А. В.; Bolotina, I. A.

doi:10.1016/j.actaastro.2020.12.026

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…The theories and models developed in such a scenario are not applicable to characterize the blast shock waves generated by the detonation of nonspherical explosive shaped charges. This happens because the detonation and blast wave propagation of shaped charges are non-axisymmetric problems of thermochemistry and fluid dynamics [11].…”

Section: Theory and Technical Context Of Blast Shock Wavesmentioning

confidence: 99%

Characterization of Blast Wave Parameters in the Detonation Locus and Near Field for Shaped Charges

Mejía

Mejía²,

Toulkeridis

2022

Mathematics

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Understanding physical phenomena such as blast shock waves produced by controlled explosions are relevant for issues appearing in the fields of military and civilian activities. The current study analyzes detonations of cylindrical and 3D cone-shaped charges through experimental trials and numerical simulations. In order to accomplish such goals, the work is divided into three sections, which include (a) numerical studies on spherical charges to define an accurate model; (b) numerical and experimental studies to assess the influence of cylindrical and 3D cone-shaped charges on incident peak pressure and the shape of shock wave propagation; and (c) numerical studies to define the magnitude of incident peak pressure as a function of orientation, L/D aspect ratio and scaled distance. Validation studies proved that the applied model was reasonably accurate. Furthermore, relevant findings included the observation that when the L/D aspect ratio decreases, more release energy is concentrated in the axial direction for a 3D cone-shaped charge, while as the aspect ratio increases, more release energy is concentrated in the radial direction for a cylindrical-shaped charge. Additionally, the blast shock wave produced a great quantity of energy for the explosive charge with the largest surface. Finally, the orientation has less influence than the L/D aspect ratio on the incident pressure contours. Therefore, cylindrical charges have the potential of inflicting great damage when used as confined charges, and 3D charges are able to cut solid materials in case of a direct contact.

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Section: Theory and Technical Context Of Blast Shock Wavesmentioning

confidence: 99%

Characterization of Blast Wave Parameters in the Detonation Locus and Near Field for Shaped Charges

Mejía

Mejía²,

Toulkeridis

2022

Mathematics

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“…Zhang et al 2021). Hypervelocity impact research in space also involves shaped charges (Selivanov et al 2021). Hence, among the six assessment tests conducted on munitions, one of them is the shaped charge jet impact test.…”

Section: Introductionmentioning

confidence: 99%

Safety Assessment of Insensitive and Conventional Energetic Materials using 50mm Small Standard Shaped Charges: Numerical and Experimental Insights

Awan,

Huang,

et al. 2024

Lat. Am. j. solids struct.

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The detonation of conventional munitions due to accidents or hostile actions causes urban destruction and loss of life, underscoring the need for improved safety measures. This study addresses the scarcity of research in munitions safety by investigating the threat of small and medium munitions. Experimental setups using 50mm shaped charges were developed and simulated with ANSYS AUTODYN, featuring JH-2 explosive and oxygen free high conductivity copper liner. Aluminum buffer plates were added to align jet energy levels with small and medium munitions' requirements. Safety assessments of JH-2 explosive against standard charges utilized φ45x40mm JH-2 targets covered with steel. Numerical simulations employed the Lee-Tarver ignition and growth model, comparing JH-2 explosive response with insensitive explosives like LX-17 and TATB. Results showed JH-2's failure in experimental tests, corroborated by simulations, while TATB and LX-17 remained stable. This study advocates for the adoption of cost-effective, insensitive explosives in next generation weaponry to mitigate unintentional detonations.

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Use of Shaped Charges with Various Liners for the Formation of High-Velocity Aluminum Particles

Kolpakov,

Fedorov,

Vinogradova

et al. 2024

J Eng Phys Thermophy

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Using shaped charges with a “magnetic cut-off” for testing anti-meteoroid shields

Cited by 4 publications

References 32 publications

Characterization of Blast Wave Parameters in the Detonation Locus and Near Field for Shaped Charges

Characterization of Blast Wave Parameters in the Detonation Locus and Near Field for Shaped Charges

Safety Assessment of Insensitive and Conventional Energetic Materials using 50mm Small Standard Shaped Charges: Numerical and Experimental Insights

Use of Shaped Charges with Various Liners for the Formation of High-Velocity Aluminum Particles

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