Experimental Research on Energy Release Behavior of W/Zr/Hf Alloy Fragment

doi:10.3969/j.issn.1000-1093.2019.08.007

Abstract

Abstract: To investigate the energy release behavior of reactive material under impacting conditions, a high-strength and high-density tungsten-zirconium-hafnium active alloy fragment is driven to impact the Q235 steel target at different speeds by a ballistic gun. A three-stage, including shock activation, self-propagation energy release, and secondary self-activation, model of impact-release energy of alloy fragments is proposed by observing the perforation pattern of steel target and the high-speed photographic image of the post-target impact-release fire zone.The activation threshold of fragment energy, the critical condition of complete energy release, the maximum size of energy release flare region and the effective damage distance behind the target were obtained by applying stress wave, thermal stress theory and shock temperature rise equation. The results show that the tungsten-zirconium-hafnium active alloy fragment not only has the kinetic energy damage ability similar to the inert fragment, but also has a little active energy consumption before the target is penetrated, and the active energy is completely released in a millisecond time regime after penetrating into the target. Before the fragmentation active energy is fully activated, the maximum damage volume and effective damage distance in the release energy flare region increase exponentially and linearly with the increase in fragmentation speed. Key

Key words: activealloyfragment, tungsten-zirconium-hafnium, energyreleasebehavior, energyreleasethreshold

CLC Number:

TJ012.4

WANG Luyao, JIANG Jianwei, LI Mei, MA Yuyu. Experimental Research on Energy Release Behavior of W/Zr/Hf Alloy Fragment[J]. Acta Armamentarii, 2019, 40(8): 1603-1610.

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第40卷
第8期2019 年8月兵工学报ACTA
ARMAMENTARIIVol.40No.8Aug.2019

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