Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles

ZHANG Pu; WANG Zhuo; KONG Xiangshao; TAN Zhuhua; WU Weiguo

doi:10.11883/bzycj-2020-0143

Volume 41 Issue 4

Apr. 2021

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ZHANG Pu, WANG Zhuo, KONG Xiangshao, TAN Zhuhua, WU Weiguo. Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles[J]. Explosion And Shock Waves, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143

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ZHANG Pu, WANG Zhuo, KONG Xiangshao, TAN Zhuhua, WU Weiguo. Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles[J]. Explosion And Shock Waves, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143

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Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles

doi: 10.11883/bzycj-2020-0143

ZHANG Pu^{1, 2
,},
WANG Zhuo^{1, 2},
KONG Xiangshao^{1
,
,},
TAN Zhuhua³,
WU Weiguo¹

1.
Green & Smart River-Sea-Going Ship, Cruise and Yacht Research Center, Wuhan University of Technology, Wuhan 430063, Hubei, China
2.
Department of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, Wuhan 430063, Hubei, China
3.
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China

Received Date: 2020-05-11
Rev Recd Date: 2020-10-20

Available Online: 2021-04-14

Publish Date: 2021-04-14

Abstract

Abstract

Experimental tests were designed to study the protection performance of the shear-thickening fluid (STF) cabin penetrated by projectiles. The penetration process and the development of cavitation in fluid cabins during the tests were captured by a high-speed camera. The residual velocities of the projectiles and the deformation of the front and rear targets of the fluid cabins were obtained as well. According to the cavitation images taken by the camera, the cavitation diameter of the STF was obviously smaller than that of water. Furthermore, cavitation collapse phenomenon was not found in the STF which shows that the STF has a significant effect in suppressing the evolution of cavitation during the penetration, and therefore decreasing the damage of the structure. A theoretical model for liquid cavitation evolution was used to find out the main factor in the cavitation suppression effect of the STF. On the one hand, the calculated cavitation diameters based on the theoretical model at two different densities were compared with the experimental results. The two densities are the densities of the STF and water, respectively, and the experimental cavitation diameters are much smaller than the calculated diameters, thus excluding the effect of density of liquid. On the other hand, the calculated cavitation diameter was also compared with the experimental data of common Newton liquid in the literature, and the effect of viscosity of liquid was excluded as well. Since both the density and viscosity may not be the main factor of the cavitation suppression effect of the STF, the assumption that the local density increase and curing effect of the STF particles attribute to the cavitation suppression was made. Besides, the STF also has a significant effect in the velocity attenuation of the projectiles and the deformation reduction of the targets. Hence, filling the STF into broadside liquid cabins of ships can significantly improve the protective performance of the structure.
- shear-thickening fluid,
- fluid cabin,
- penetration,
- projectile,
- residual velocities of projectiles,
- cavitation

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References(33)

References

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