Measuring and Numerical Simulation of Attenuation of Planar Shock Wave in PMMA

doi:10.3969/j.issn.1000-1093.2016.07.008

Abstract

Abstract: The attenuation rule of shock wave in the materials is studied. A polyvinylidene fluoride (PVDF) film pressure sensor is used to obtain the attenuation data of shock wave driven by plane-wave lens-driven explosives in PMMA material. The plane-wave lens-driven explosive with high and low detonation velocities is numerically modeled, and the calculation termination due to the reversal of largely deformed explosive grid overflowing the metal cylinder is dealt with. Comparative analysis of simulated and experimental results shows that the shock wave traveling through 50 mm thick PMMA is attenuated from 7.4 GPa to 4.02 GPa. The research provide the experimental data for the attenuation of shock wave in PMMA, and the matters needing attention to the installation of PVDF film pressure sensor are presented.

Key words: ordnance science and technology, PVDF film pressure sensor, shock wave, attenuation, numerical simulation

CLC Number:

O347.5

ZHANG Shi-wen, LONG Jian-hua, JIA Hong-zhi, JIN Shan. Measuring and Numerical Simulation of Attenuation of Planar Shock Wave in PMMA[J]. Acta Armamentarii, 2016, 37(7): 1214-1219.

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