非線形確率過程における極大値の確率分布 : 波浪中の船体に誘起される相当応力の短期予測

概要

論文の詳細を見る
A method of numerical simulation is proposed for the purpose of predicting the extreme value of non-linear response which is produced by the combination of linear responses of a ship in short-term seawaves. Time histories of the non-linear equivalent stress induced on the ship hull in ocean waves have been numerically simulated by using the computer aided technique for cases when a range of correlation coefficients from -1 to 1 are assumed between the linear stresses, that is, the wave normal stress and the wave shearing stress. According to the numerically simulated results, it is concluded that the magnitude of the extreme value of equivalent stress is dependent upon the correlation coefficient between the component stresses and that the upper limit and the lower limit of the extreme value of equivalent stress can be obtained from the results based upon the assumed correlation coefficient of 1 or -1, between which the significant difference is not found.
社団法人日本船舶海洋工学会の論文
1985-03-22