Dynamic hardness of rock materials under strong impact loading

Xu, Tianhan; Wang, Mingyang; Li, Jie

doi:10.1016/j.ijimpeng.2020.103555

Cited by 6 publications

(1 citation statement)

References 32 publications

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“…With the increase in the impact velocity, the pressure on the target side of the interface also increases. e stress-strain state of the target in the near-penetration region can be seen as the one-dimensional strain state, and the induced stress waves are onedimensional plane waves [8]. Metal targets turn to plastic flow at the elastic limit.…”

Section: Dynamicmentioning

confidence: 99%

Mass Loss and Penetration Depth of Hypervelocity Projectiles

Qiu

et al. 2021

Shock and Vibration

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Numerous investigations recorded a dramatic decrease in penetration depth at hypervelocity. The decrease is due to the severe mass loss of the projectile. The mechanics of mass loss are complicated, so the entirely theoretical model is still absent. In this paper, we derive a semitheoretical formula for mass loss by solving the equation of motion of the projectile during penetration. The result shows that the decrease in projectile mass at hypervelocity accords with the power law. Furthermore, we obtain a continuous formula for depth of penetration in the entire velocity domain. The theoretical results agree well with experimental data. The formula for the critical velocity of depth decreasing is also obtained as a by-product of the solving procedure.

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Section: Dynamicmentioning

confidence: 99%