バルクキャリアの構造振動特性の研究(第一報)

概要

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Configurations of ship structures are so complicated that vibratory behaviour of the ship is very complex especially in the higher modes. In order to study the correlation between measurements and calculations, full scale measurements by a vibration generater and three dimensional finite element calculations have been carried out on 60,000dwt bulk carrier. Vibration was measured on about 100 points of the ship structure. The finite element calculation model has about 2,000 joints and about 10,000 degrees of freedom. An added mass matrix of the entrained water was calculated by boundary element method and was used in the vibration analysis. Good correlations are seen between measurements and the theoretical prediction. Dynamic characteristics of the higher mode vibration of the ships are discussed concerning the natural frequency, vibration mode and response.
社団法人日本船舶海洋工学会の論文
1985-03-22