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Global Vibration Analysis of Hull Structure

Shi Fengrong

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Abstract

Vibration prediction of a fall pipe vessel was discussed.FEM is applied to analyze global vibration responses,caused by thrusters and main engines excitation,natural frequency and modes with the effect of fluid-structure coupling considered.Calculation results show that vibration characteristics of vessel are perfect and meet the ISO6954:2000(E) standard.Through a comparison of FE analysis result and the measured data,the accuracy of FE analysis is verified,so the method is applicable in engineering and its results could be a reference for vibration control and estimation of the feasibility of analysis method.

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What this paper is about

Vibration prediction of a fall pipe vessel was discussed.FEM is applied to analyze global vibration responses,caused by thrusters and main engines excitation,natural frequency and modes with the effect of fluid-structure coupling considered.Calculation results show that vibration characteristics of vessel are perfect and meet the ISO6954:2000(E) standard.Through a comparison of FE analysis result and the measured data,the accuracy of FE analysis is verified,so the method is applicable in engineering and its results could be a reference for vibration control and estimation of the feasibility of analysis method.

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Available abstract

Vibration prediction of a fall pipe vessel was discussed.FEM is applied to analyze global vibration responses,caused by thrusters and main engines excitation,natural frequency and modes with the effect of fluid-structure coupling considered.Calculation results show that vibration characteristics of vessel are perfect and meet the ISO6954:2000(E) standard.Through a comparison of FE analysis result and the measured data,the accuracy of FE analysis is verified,so the method is applicable in engineering and its results could be a reference for vibration control and estimation of the feasibility of analysis method.

Key concepts: Vibration, Hull, Finite element method, Structural engineering, Coupling (piping), Natural frequency, Frequency analysis, Engineering

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