Publicações

Luo, HB., Wang, H. e Guedes Soares, C. (2012), “Numerical and experimental study of hydrodynamic impact and elastic response for one free-drop wedge with stiffened panels”, Ocean Engineering, Volume 40, pp. 1-14

This paper deals with the study of the slamming load and response of one complex 3D steel wedge with deadrise angle 22°. The stiffened panels on both sides of the wedge are made up of 9 longitudinal stiffeners and 5 transverse frames. In order to study the effect of flexibility on the elastic responses, the cross sections of the stiffeners and frames on each side were designed with different sizes. It is one segment of an idealized ship structure with V-shaped wedge bottom that was used in a series of free-drop experiments impacting still water. The acceleration, slamming pressures, and stress responses were measured. In this paper, one uncoupled method combining Wagner theory and the finite element method is presented to analyze this slamming problem for the 3D structure. The matched asymptotic theory is expanded to predict both the motion and the slamming pressure on the free-drop rigid body. Then slamming pressures are added on the finite element model to predict the transient structural responses. The numerical and experimental results of this slamming problem for a 3D structure are compared. Good agreement is achieved and the hydroelastic effects are discussed.

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