Abstract :
A simple 2D analysis on a long flexible structure, which is used for the floating type offshore wind power plant, has been performed to know the basic hydroelastic behavior of the structure. The method is not time consuming to cover wide-range combinations of the incident angle and the period. Using this method, the hydroelastic behavior of the structure in oblique irregular waves is investigated. It is found that the high stress region is very sensitive for the variation of the wave direction and the period. The variance of the stress is dramatically reduced, if we take the effect of the wave short-crestedness into account. The estimation of the long term stochastic property and the fatigue damage assessment has been also performed. It is found that the wave short-crestedness plays an important roll to lower the fatigue damage.
Keywords :
elasticity; fatigue; hydrodynamics; ocean waves; offshore installations; wind power plants; fatigue damage assessment; floating type offshore wind power plant; hydroelasticity; long flexible structure; long term stochastic property; oblique irregular waves; wave direction; wave short-crestedness; Counting circuits; Fatigue; Flexible structures; Frequency; Hydrodynamics; Performance analysis; Stochastic processes; Stress; Wind energy; Wind turbines; Fatigues and Wind power generation; Hydrodynamics; Offshore structure;
