Pressure distribution inside liquid during a liquid-filled vessel impacted by double-fragment

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (19) : 191-197.

LAN Xiaoying, LI Xiangdong, ZHOU Lanwei, JI Yangziyi

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Abstract

In order to study pressure distribution inside liquid induced by hydraulic hammer effect during a liquid-filled vessel impacted by double-fragment, the software ANSYS/LS-DYNA was used to simulate this process. Tests were conducted to verify the simulation results. Pressure distribution, attenuation and superposition effects inside liquid were analyzed under action of double-fragment. The results showed that high pressure zones of shock wave front and head of fragments can be overlapped with each other to form superimposed wave; superimposed pressure gradually decreases with increase in distance in axial direction; in radial direction, pressure on fragment motion trajectory is the greatest, and the farther away from this trajectory, the lower the pressure; superimposed pressure decreases with increase in distance between fragments.

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Hydrodynamic ram / Double fragments / Liquid-filled vessel / Pressure distribution

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LAN Xiaoying, LI Xiangdong, ZHOU Lanwei, JI Yangziyi. Pressure distribution inside liquid during a liquid-filled vessel impacted by double-fragment[J]. Journal of Vibration and Shock, 2019, 38(19): 191-197

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