日本船舶海洋工学会論文集
Online ISSN : 1881-1760
Print ISSN : 1880-3717
ISSN-L : 1880-3717
船体応答に基づく波浪情報推定における不確定性解析手法 -第二報-主成分分析による応答関数の不確定性
陳 曦高見 朋希岡 正義
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ジャーナル フリー

2023 年 38 巻 p. 75-83

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 A new response-based wave estimation method is proposed for addressing problems of uncertainty in wave parameters associated with uncertainty in the transfer function. The present Principal Component Analysis-based Stochastic Wave Spectra Estimation (SWSE-PCA) method utilizes the Principal Component Analysis (PCA) for representing the uncertainty in transfer functions of wave-induced responses. Using the SWSE-PCA method, the stochastic response surface estimation does not require time-consuming multiple simulations, but the uncertainty in wave parameters can be evaluated by optimizing the stochastic objective function only once. The validity of the present method is discussed by comparing the SWSE-PCA results to the results of uncertainty analyses based on the Monte Carlo Simulation (MCS) in which solutions of the deterministic problems are collected, by referring to numerical simulations and full-scale measurements.

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