Abstract
The study aims to explore the characteristics of the impact load of a ship under the influence of a harsh marine environment. The horizontal excitation test platform is established to analyze the response law of the external excitation frequency of the sloshing load. Moreover, nonlinear liquid sloshing impact load characteristics are analyzed under porous baffling with different solids ratios and tanks with different liquid depths. It is found that the resonance frequency of the tank without baffling is 0.93ω 0, and that of the tank with a porous baffle is 0.96ω0. With the solid ratios of 0.4 to 0.8, the transient and steady state pressure peaks decrease by 66% and 71%, respectively. The liquid depths of H to H/4, for both transients and steady state pressure peaks, decreased by about 36%. It shows that the resonant frequency is closer to the natural frequency when the amplitude of liquid sloshing is reduced. When the solid ratio is smaller or the liquid depth increases, the impact load of liquid on the wall is stronger, and the double peak of impact load is more obvious. This provides a reference for the engineering design of the liquid tank and the study of fluid sloshing damping.
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