4. A Study on Wave Loads Acting on a Ship in Large Amplitude Waves

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概要

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• It is known that the wave loads excited on a ship advancing in large amplitude waves are (quite different from those in small amplitude waves mainly because the submerged of ship's hull varies substantially with time, and the coupling phenomena between vertical and horizontal hydrodynamic forces may occur. In this paper, a theoretical but practical method is proposed for predicting the hydrodynamic and hydrostatic forces acting on the submerged portion of a ship which is varying with time. As a result, the equations of ship motion are of heave-pitch-sway-yaw-roll coupled form with time-varying hydrodynamic coefficients. The wave loads computed by the present method are compared with the experimental values. The predicted peak values of the wave loads and their nonlinear behavior are in good agreement with experimental measurement. It is also found that the nonlinearities of lateral wave loads are more pronounced than vertical wave loads for a ship fixed in waves, while the vertical wave loads are more sensitive to wave height than the horizontal ones for a freely floating or sailing ship.

• 社団法人日本船舶海洋工学会の論文

著者

• FUJINO Masataka

  University of Tokyo

• Fujino M

  Tokyo Univ.

• YOON Bum

  University of Ulsan

関連論文

• 10. Equivalent Added Mass of Ships in Collisions
• 9. Motion and Longitudinal Strength of a Ship in Head Sea and the Effects of Non-Linearities
• 10. Studies on Manoeurability of Ships in Restricted Waters
• 4. A Study on Wave Loads Acting on a Ship in Large Amplitude Waves

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