Roll response of a ship under the action of a sudden excitation

Article type: Research Article

Authors: Odabaşi, A. Yücel | Vince, J.

Affiliations: British Ship Research Association, Wallsend, Tyne and Wear, U.K.

Abstract: This paper examines the importance of roll damping on the gust response of a ship. As a mathematical model an ad hoc roll equation is used and the action of the wind gust is represented by means of a step function. A solution of the equation of motion is developed by using the asymptotic method of Bogoliubov and Mitropolsky [3]. Computational results on the influence of roll damping, initial conditions and the gust magnitude are given for a stern trawler. Results clearly indicate the importance of roll damping. In the light of this investigation it is suggested that in determining the gust response of a ship in a weather criterion the effect of roll damping should be taken into account.

DOI: 10.3233/ISP-1982-2934002

Journal: International Shipbuilding Progress, vol. 29, no. 340, pp. 327-333, 1982