Study on local vibration modal analysis of new scientific investigation ship based on finite element method

Abstract:
With the development of China's maritime power construction, the research on vibration and noise of scientific research ships has become a hot spot. The detailed model of the new scientific investigation ship is established by using the finite element software to comprehensively calculate and analyse the ship's working conditions, the selection of boundary conditions and the main excitation force and excitation torque of the ship. The modes of the ship's steering deck, main deck, lower deck living area and main engine compartment are calculated and analysed, and the excitation frequency of the ship's possible resonance is analysed, It provides a basis for ship harmonic response and noise analysis in the later stage.