TIME SIMULATION OF NON-LINEAR HYDROELASTIC RESPONSE OF SHIP

A generalized strip theory for the arbitrary heave motion of a two- dimensional strip in waves is presented and expressions for dynamic loading that consider the effects of nonlinearity are correspondingly derived. The generalized strip theory is then combined with the structural representation of a ship as a Timoshenko beam, and hydroelastic analysis is applied. This results in a time-domain analysis of the nonlinear symmetrical response of a ship as an elastic structure. The method is applicable to the evaluation of the real-time structural responses of a given ship in given realizations of regular or irregular seas. This includes nonlinear wave-induced loadings and slamming. Computations performed for a containership and a naval combat vessel are discussed.