Anti-explosive performances of multicell liquid cabin structures

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (2) : 293-302.

ZHAO Zhujie, HOU Hailiang, LI Dian, YAO Menglei

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Abstract

In order to investigate the anti-explosive performance of multicell liquid cabin structure, the concave multicell liquid cabin structure is proposed, and the three-dimensional numerical simulation models of the conventional liquid cabin structure and the concave multicell liquid cabin structure are established. The response and protection characteristics of these two types of structures under the action of explosion shock wave loads of different strengths are compared, and the influence of the change of liquid filling method on the protection effectiveness of the multicell liquid cabin structure is discussed. The results show that: under the blast impact load, the panels near the blast and the panels far from the blast of the fully filled liquid cabin structure show bending deformation in line with the direction of the blast, while the rest of the outer panels are bent and deformed to the outside of the structure. The deformation morphology of the partially filled liquid cabin structure is related to the filling position. When the structure is completely filled with liquid, the anti-explosive performance of the concave multicell liquid cabin structure is better than that of the conventional liquid cabin structure. When the structure is partially filled with liquid, the anti-explosive performance of the concave multicell liquid cabin structure, which is partially filled with liquid near the explosion, is better than that of the conventional liquid cabin structure, and the anti-explosive performance of the concave multicell liquid cabin structure, which is partially filled with liquid away from the explosion, is inferior to that of the conventional liquid cabin structure.

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Multicell structure / Liquid cabin structure / Partial liquid filling / Anti-explosive properties / Energy absorption characteristics

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ZHAO Zhujie, HOU Hailiang, LI Dian, YAO Menglei. Anti-explosive performances of multicell liquid cabin structures[J]. Journal of Vibration and Shock, 2023, 42(2): 293-302

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