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Hydroelastic analysis of a rectangular plate subjected to slamming loads

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Abstract

A hydroelastic analysis of a rectangular plate subjected to slamming loads is presented. An analytical model based on Wagner theory is used for calculations of transient slamming load on the ship plate. A thin isotropic plate theory is considered for determining the vibration of a rectangular plate excited by an external slamming force. The forced vibration of the plate is calculated by the modal expansion method. Analytical results of the transient response of a rectangular plate induced by slamming loads are compared with numerical calculations from finite element method. The theoretical slamming pressure based on Wagner model is applied on the finite element model of a plate. Good agreement is obtained between the analytical and numerical results for the structural deflection of a rectangular plate due to slamming pressure. The effects of plate dimension and wave profile on the structural vibration are discussed as well. The results show that a low impact velocity and a small wetted radial length of wave yield negligible effects of hydroelasticity.

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Acknowledgement

This work was performed within the Strategic Research Plan of the Centre for Marine Technology and Ocean Engineering, which is financed by Portuguese Foundation for Science and Technology (Fundação para a Ciência e Tecnologia-FCT).

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Correspondence to Shan Wang.

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Foundation item: Supported by Portuguese Foundation for Science and Technology (Fundação para a Ciência e Tecnologia-FCT)

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Wang, S., Guedes Soares, C. Hydroelastic analysis of a rectangular plate subjected to slamming loads. J. Marine. Sci. Appl. 16, 405–416 (2017). https://doi.org/10.1007/s11804-017-1434-6

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  • DOI: https://doi.org/10.1007/s11804-017-1434-6

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