Characteristics of interface defeat and penetration during the impact between a ceramic armor and a long-rod projectile

TAN Mengting; ZHANG Xianfeng; BAO Kuo; WEI Haiyang; HAN Guoqing

doi:10.11883/bzycj-2020-0338

Volume 41 Issue 3

Mar. 2021

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TAN Mengting, ZHANG Xianfeng, BAO Kuo, WEI Haiyang, HAN Guoqing. Characteristics of interface defeat and penetration during the impact between a ceramic armor and a long-rod projectile[J]. Explosion And Shock Waves, 2021, 41(3): 031406. doi: 10.11883/bzycj-2020-0338

Citation:

TAN Mengting, ZHANG Xianfeng, BAO Kuo, WEI Haiyang, HAN Guoqing. Characteristics of interface defeat and penetration during the impact between a ceramic armor and a long-rod projectile[J]. Explosion And Shock Waves, 2021, 41(3): 031406. doi: 10.11883/bzycj-2020-0338

Citation:

TAN Mengting, ZHANG Xianfeng, BAO Kuo, WEI Haiyang, HAN Guoqing. Characteristics of interface defeat and penetration during the impact between a ceramic armor and a long-rod projectile[J]. Explosion And Shock Waves, 2021, 41(3): 031406. doi: 10.11883/bzycj-2020-0338

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Characteristics of interface defeat and penetration during the impact between a ceramic armor and a long-rod projectile

doi: 10.11883/bzycj-2020-0338

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2020-09-22
Rev Recd Date: 2020-10-15

Available Online: 2021-03-05

Publish Date: 2021-03-10

Abstract

Abstract

Interface defeat/dwell can effectively improve the anti-penetration performance of a ceramic armor at certain degree, which attracts the attention from researchers all over the world in recent years. Experiments on a ceramic armor subjected to the impact of a long-rod projectile (LRP) were carried out to investigate the characteristics of interface defeat and penetration during the impact in this paper. A theoretical model for the penetration process of a LRP into a ceramic target with semi-finite thickness at different impact velocities was established by considering interface defeat/dwell to study quantitatively the effect of interface defeat/dwell on the penetration. The theoretically calculated results on dwell/penetration transition velocity, dwell time, penetration velocity and depth of penetration agree well with the experimental data, which proves that the established theoretical model is accurate. The influences of the projectile and ceramic materials on the interface defeat/dwell and penetration were analyzed. Both the experimental results and the calculated results by the theoretical model show that the interaction between LRPs and ceramics transfers from interface defeat to penetration when the impact velocity increases. It also indicates that the established theoretical model can depict the interaction modes of ceramics and LRPs under different impact velocities. The yield stress and density of the projectile materials play a coupling role in the interaction between LRPs and ceramics when the interface defeat/dwell occurs. The higher the yield strength and density of the projectile materials, the shorter the dwell time and the higher the penetrating ability of the projectile. The higher the dynamical yield strength of the ceramics, the more markedly the interface defeat/dwell and the higher the anti-penetration ability of the ceramic armors. The established theoretical model in consideration of interface defeat/dwell can partially reveal the mechanism of the interface defeat, and it can provide a reference for the design of ceramic composite targets.
- long-rod projectile,
- ceramic,
- interface defeat,
- dwell,
- penetration,
- impact

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References(34)

References

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