Model test study on damage depth of concrete target under penetration and explosion

LU Hao; YUE Songlin; SUN Shanzheng; SONG Chunming; XIONG Ziming

doi:10.11883/bzycj-2020-0191

Volume 41 Issue 7

Jul. 2021

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LU Hao, YUE Songlin, SUN Shanzheng, SONG Chunming, XIONG Ziming. Model test study on damage depth of concrete target under penetration and explosion[J]. Explosion And Shock Waves, 2021, 41(7): 073301. doi: 10.11883/bzycj-2020-0191

Citation:

LU Hao, YUE Songlin, SUN Shanzheng, SONG Chunming, XIONG Ziming. Model test study on damage depth of concrete target under penetration and explosion[J]. Explosion And Shock Waves, 2021, 41(7): 073301. doi: 10.11883/bzycj-2020-0191

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Model test study on damage depth of concrete target under penetration and explosion

doi: 10.11883/bzycj-2020-0191

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing, 210007, Jiangsu, China

Received Date: 2020-06-10
Rev Recd Date: 2021-01-31

Available Online: 2021-06-30

Publish Date: 2021-07-05

Abstract

Abstract

In order to study the influence of the cavity on the explosion effect caused by the penetration of concrete target, model tests of penetration and explosion of concrete target at the velocity of 450–700 m/s were carried out. Based on 10 sets of test results and dimensional analysis, the effect of penetration result on the depth of blast hole is studied. Results indicate that the dimensionless impact coefficient I_p can be used to characterize the penetration effects such as penetration depth, hole volume and penetration damage value, regardless of length-diameter ratio of charge, the increase of damage depth is mainly influenced by dimensionless impact coefficient I_p and explosion coefficient I_e. Based on the experimental data, influence rule of the depth of crater is obtained for the length-diameter ratio of 5: (1) when the I_p is small, the penetration depth is small, the change of I_e has little influence on the depth of crater h_e; (2) with the increase of I_p, h_e increases at a decreasing rate, influence of I_e on h_e increases; (3) with the increase of I_p to a certain extent, h_e tends to reachsaturation value, influence of I_e on h_e tends to be stable.
- penetration,
- explosion,
- concrete target,
- impact coefficient,
- damage depth,
- model test

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References(18)

References

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