Cavity expansion response of concrete targets under penetration

NIU Zhenkun; CHEN Xiaowei; DENG Yongjun; YAO Yong

doi:10.11883/bzycj-2017-0368

Volume 39 Issue 2

Feb. 2019

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NIU Zhenkun, CHEN Xiaowei, DENG Yongjun, YAO Yong. Cavity expansion response of concrete targets under penetration[J]. Explosion And Shock Waves, 2019, 39(2): 023301. doi: 10.11883/bzycj-2017-0368

Citation:

NIU Zhenkun, CHEN Xiaowei, DENG Yongjun, YAO Yong. Cavity expansion response of concrete targets under penetration[J]. Explosion And Shock Waves, 2019, 39(2): 023301. doi: 10.11883/bzycj-2017-0368

NIU Zhenkun, CHEN Xiaowei, DENG Yongjun, YAO Yong. Cavity expansion response of concrete targets under penetration[J]. Explosion And Shock Waves, 2019, 39(2): 023301. doi: 10.11883/bzycj-2017-0368

Citation:

NIU Zhenkun, CHEN Xiaowei, DENG Yongjun, YAO Yong. Cavity expansion response of concrete targets under penetration[J]. Explosion And Shock Waves, 2019, 39(2): 023301. doi: 10.11883/bzycj-2017-0368

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Cavity expansion response of concrete targets under penetration

doi: 10.11883/bzycj-2017-0368

NIU Zhenkun^1
,,
CHEN Xiaowei^{2, 3
,
,},
DENG Yongjun^{1, 2},
YAO Yong^{1, 2}

1.
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
2.
Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621010, Sichuan, China
3.
Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China

Received Date: 2017-10-14
Rev Recd Date: 2017-12-18
Publish Date: 2019-02-05

Abstract

Abstract

The LS-DYNA was used to simulate the process of a rigid projectile normally penetrating into a concrete target. Based on the two threshold values of ultimate compressive strain and ultimate tensile strain of the concrete, the cavity expansion response regions of the concrete target were identified and the size of each concrete response region in the penetration process was obtained. The effect of the penetration velocity on the crushed and cracked regions of the concrete was analyzed. The relationships between the boundary expansion velocity of the crushed/cracked regions and the penetration velocity were discussed. The results indicate that with increasing the initial impacting velocity, the interface velocities of the crushed/cracked regions and the radius of the crushed region increase, but the radius of the cracked region decreases. At last, the cracked region may disappear when the penetration velocity achieves a certain critical value.
- concrete,
- penetration,
- cavity,
- expansion response region,
- interface expansion velocity

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References(18)

References

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