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Transverse strength analysis of catamarans
Authors:Svein Erling Heggelund  Torgeir Moan  Stig Oma
Institution:

a Department of Marine Structures, NTNU, N-7491 Trondheim, Norway

b Fjellstrand AS, N-5632 Omastrand, Norway

Abstract:Stresses and deformations relevant for transverse strength analysis are calculated for a 60 m catamaran by a compartment model and are compared with corresponding results from a global model. It is found that the flexibility of the partial bulkheads typical for a twin-hull Ro/Ro-vessel is so large that the interaction with the surrounding structure has to be accounted for. If springs are applied, the results are sensitive to the spring stiffness. A web frame model that does not include any bulkheads, gives large errors and is not recommended.
Keywords:Marine technology  Structural analysis  Catamaran    Finite element models
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