Experimental Investigation on Load Characteristics and Structure Response of Finite-Size Plate Subjected to Underwater Explosions

LIU Libin; LI Haitao; DIAO Aimin; WANG Xiaoqiang

doi:10.11858/gywlxb.20180516

Volume 32 Issue 5

Aug 2018

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Chinese Journal of High Pressure Physics > 2018 > 32(5): 055101.

LIU Libin, LI Haitao, DIAO Aimin, WANG Xiaoqiang. Experimental Investigation on Load Characteristics and Structure Response of Finite-Size Plate Subjected to Underwater Explosions[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 055101. doi: 10.11858/gywlxb.20180516

Citation:

LIU Libin, LI Haitao, DIAO Aimin, WANG Xiaoqiang. Experimental Investigation on Load Characteristics and Structure Response of Finite-Size Plate Subjected to Underwater Explosions[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 055101. doi: 10.11858/gywlxb.20180516

Citation:

LIU Libin, LI Haitao, DIAO Aimin, WANG Xiaoqiang. Experimental Investigation on Load Characteristics and Structure Response of Finite-Size Plate Subjected to Underwater Explosions[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 055101. doi: 10.11858/gywlxb.20180516

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Experimental Investigation on Load Characteristics and Structure Response of Finite-Size Plate Subjected to Underwater Explosions

doi: 10.11858/gywlxb.20180516

College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China

Received Date: 09 Feb 2018
Rev Recd Date: 10 Apr 2018

Abstract

Abstract

In order to study the loading characteristics of underwater explosion shock wave and bubble near the structural boundary, we designed and tested several plate models.By changing the ratio of stand-off to the maximum bubble radius, the flat thickness and other parameters, we analyzed the bubble pulsation and the low-pressure flow field at the plate boundary, as well as the local and global response characteristics of the slab based on the strain analysis.The results show that a low-pressure (negative pressure) flow field appears at the boundary of the plate during the movement of the bubble in near-flat explosion.The duration of the low-pressure accounts for 60%-80% of the bubble pulsation period and the maximum negative pressure can reach 0.1 MPa.With the reduction of the ratio of stand-off to the maximum bubble radius, the final deformation of the plate changes from elastic and sagging deformation to hogging deformation.
- underwater explosion,
- negative pressure,
- load characteristics,
- bubble pulsation,
- structure response

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References(14)

References

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