Self-Excited Rolling of Froating Bodies Due to Wind : 2nd Report : Measurement of Dynamic Wind Pressure

Abstract

To study the self-excited rolling motion of floating bodies in a steady wind, measurements of static and dynamic wind pressure on the surface of a model are carried out for two models. The influences of rolling period and amplitude on dynamic pressure are also examined. From these experiments, it is concluded that the behaviors of dynamic pressure on the horizontal surface of a superstructure and a deck cause the self-excited rolling and ones on the vertical surface of models have usually the effect of damping moment. Some discussions using a quasi-static analysis to explain the behaviors of the dynamic pressure are made.