Interaction of a shock wave with a composite shell structure under an external explosion

GAO Kanghua; LI Bin; LIU Yudu; SUN Song

doi:10.11883/bzycj-2017-0370

Volume 39 Issue 5

May 2019

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GAO Kanghua, LI Bin, LIU Yudu, SUN Song. Interaction of a shock wave with a composite shell structure under an external explosion[J]. Explosion And Shock Waves, 2019, 39(5): 052101. doi: 10.11883/bzycj-2017-0370

Citation:

GAO Kanghua, LI Bin, LIU Yudu, SUN Song. Interaction of a shock wave with a composite shell structure under an external explosion[J]. Explosion And Shock Waves, 2019, 39(5): 052101. doi: 10.11883/bzycj-2017-0370

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Interaction of a shock wave with a composite shell structure under an external explosion

doi: 10.11883/bzycj-2017-0370

GAO Kanghua^{1, 2
,},
LI Bin^{3
,
,},
LIU Yudu²,
SUN Song²

1.
Unit 92656, Chinese People’s Liberation Army, Sanya 572000, Hainan, China
2.
State Key Laboratory for Disaster Prevention and Mitigation of Explosion and Impact, Army University of Engineering, Nanjing 210007, Jiangsu, China
3.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China

Received Date: 2017-10-16
Rev Recd Date: 2018-01-24

Available Online: 2019-07-25

Publish Date: 2019-05-01

Abstract

Abstract

In order to investigate the interaction of the shock wave on a reinforced concrete composite shell structure with the external protecting wall, the explosion experiments were carried out. There were two conditions in the experiments, the first condition was that the test structure was located on the ground, and the second one was that the test structure was surrounded by soil. The blast wave load distribution and the vibration characters of the structure were analyzed. The experimental results are as follows. Under external shock wave attack, the structure surface explosion load was mainly formed in the shock wave diffraction process. When determining the structure surface blast load, the shock wave pressure attenuation in the diffraction process should be considered. The structure component which first contacts with the shock wave first begins to vibrate, then the vibration frequency and amplitude decrease because the whole structure takes part in vibration gradually. In the experimental conditions, the soil surrounding the structure could reduce the vibration frequency of the protecting wall component which meeting shock wave, and reduce the vibration amplitudes of the protecting wall and the composite shell structure.
- shock wave,
- cylindrical shell,
- interaction,
- blast load,
- structure vibration

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References(20)

References

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