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The effect of hydrostatic pressure fields on the dispersion characteristics of fluid-shell coupled system

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Abstract

The effect of hydrostatic pressure on the vibration dispersion characteristics of fluid-shell coupled structures was studied. Both fluid-loaded cylindrical shells and fluid-filled cylindrical shells were considered. Numerical analysis was applied to solve the dispersion equations for shells filled with or loaded with fluid at various hydrostatic pressures. The results for external pressure showed that non-dimensional axial wave numbers are nearly independent when the pressure is below the critical level. The influence of internal pressure on wave numbers was found significant for the real branch s=1 and the complex branches of dispersion curves. The presence of internal pressure increased the cut on frequencies for the branch s=1 for high order wave modes.

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Correspondence to Zhi-zhong Liu.

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Zhi-Zhong Liu was born in 1980. He is a doctorate student at the School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, majoring in vibration and noise control of ship structure.

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Liu, Zz., Li, Ty., Zhu, X. et al. The effect of hydrostatic pressure fields on the dispersion characteristics of fluid-shell coupled system. J. Marine. Sci. Appl. 9, 129–136 (2010). https://doi.org/10.1007/s11804-010-9010-3

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  • DOI: https://doi.org/10.1007/s11804-010-9010-3

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