境界要素-有限要素ハイブリッドモデルを用いた不規則形状大規模浮体の流力弾性応答解析

概要

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The hydroelastic response analysis of irregular-shaped large floating structures is formulated by using a discrete hybrid model. The floating structure is discretized by finite elements (FE), whereas fluid domain by boundary elements (BE). Structural analysis is based on the Mindlin plate theory. Only the structure-fluid interface is discretized in the fluid domain. The equation of motion is constructed by coupling BE and FE on the structure-fluid interface. Quadratic isoparametric elements are used for both FE and BE. The accuracy and effectiveness of the BE-FE hybrid model is verified by comparing with published experimental results on the hydroelastic response of a rectangular-shaped large floating structure. Moreover, the dynamic behaviors of irregular-shaped large floating structures are investigated for different wave lengths and incident angles by using the BE-FE hybrid model.
社団法人日本建築学会の論文
2002-05-30