Numéro : 2058 - Year : 1988
Structural scantling of a surface effect ship by a finite element computer calculation
G.BABAUD,, Ingénieur, Service Mécanique et Structures de l’Institut de Recherches de la Construction Navale
Y. MAVRAKAKIS, Ingénieurs, Service Mécanique et Structures de l’Institut de Recherches de la Construction Navale
Ph. GOUBAULT, Ingénieur sous contrat, Département Bâtiments de Surface, Sous-Direction Navires du Service Technique des Constructions et Armes Navales
The purpose of this paper is to present the structural scantling study of a 45 meters' surface effect ship.
The first part consists in a presentation of the method used by the naval architect (S.T.C.A.N.) to determine the initial scantling. In particular, the qualitative choice of the dimensioning loading
conditions are justified here.
The second part of the paper is a description of the scantling verification study based on a finite element calculation using a three dimensional model. The analysis of the results of the computer calculation (global deformation, internal stresses in every points, stresses concentration in critical zones) associated with the respect of local effort dimensioning rules, allows to modify the scantling (lighter or stronger) and to understand the behaviour of such a structure.
We'll try to carry out the efficiency and the complementarity of the two methods to obtain a first optimisation of the structure.
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