Vibration prediction analysis of 3000TEU container ship

Abstract

This paper takes 3000TEU container as the research object, vibration and response were studied. The 3000TEU container ship has been transformed from a diesel engine driven ship to a LNG powered ship, so it is necessary to improve the effectiveness and accuracy of vibration prediction before the transformation. Considering the excitation effect of the main vibration sources such as engine and propeller, the natural frequency of the ship is calculated by finite element method using Femap with NX Nastran software, and then the vibration prediction of the whole ship is carried out to obtain the response results of each region. According to the analysis of the ship's natural frequency and vibration response results, the ship meets the ISO 6954:E2000 vibration standard.