A Simplified Model for Long Rod of Ultra-High Speed Perforation onto Ceramic/Metal Target

ZHAI Yang-Xiu; WU Hao; FANG Qin

doi:10.11858/gywlxb.2017.06.009

Volume 31 Issue 6

Nov 2017

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Chinese Journal of High Pressure Physics > 2017 > 31(6): 742-752.

ZHAI Yang-Xiu, WU Hao, FANG Qin. A Simplified Model for Long Rod of Ultra-High Speed Perforation onto Ceramic/Metal Target[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 742-752. doi: 10.11858/gywlxb.2017.06.009

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ZHAI Yang-Xiu, WU Hao, FANG Qin. A Simplified Model for Long Rod of Ultra-High Speed Perforation onto Ceramic/Metal Target[J]. Chinese Journal of High Pressure Physics, 2017, 31(6): 742-752. doi: 10.11858/gywlxb.2017.06.009

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A Simplified Model for Long Rod of Ultra-High Speed Perforation onto Ceramic/Metal Target

doi: 10.11858/gywlxb.2017.06.009

State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, China

Received Date: 11 Jan 2017
Rev Recd Date: 28 Mar 2017

Abstract

Abstract

A quick and practical engineering analysis model based on the reasonably simplified hypothesis is an important means to study the ballistic performance of the ceramic/metal targets.The available detailed theoretical models have to carry out complex calculation and rarely are made comparisons with the residual velocity of the projectile perforating ceramic/metal targets under the condition of ultra-high speed (with the projectile muzzle velocity greater than 1 500 m/s).In this study, considering the decrease of the strength of fractured ceramic during the penetration of the projectile into fractured conical ceramic, the effect of the projectile's initial velocity on the value of the half conical angle, and the influence of the metal plate's deflection on the long rod of ultra-high speed penetrating the fractured conical ceramic, based on the semi-fluid dynamics Alekseevskii-Tate (A-T) model, a simplified model predicting the residual velocity of the long rod of ultra-high speed perforating ceramic/metal target was proposed.By comparing with the experiment data and the simulation results of the tungsten long rod (1 800-2 600 m/s) perforating Al₂O₃/RHA steel target carried out on the LS-DYNA finite element analysis software, the correctness and applicability of the proposed simplified model, the numerical model and its corresponding parameters were validated.Furthermore, based on the simplified model, the ballistic performance of composite targets consisting of 4 ceramic facing plates (Al₂O₃, AlN, SiC, B₄C) and 2 metallic backing plates (RHA steel, aluminum), under the condition of certain thickness and certain areal density was discussed.
- long rod,
- ultra-high speed,
- perforation,
- ceramic/metal,
- model

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References(30)

References

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A Simplified Model for Long Rod of Ultra-High Speed Perforation onto Ceramic/Metal Target

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