Abstract
Abstract For the plate or multicabin structure of ships, the vibration transmission characteristics have a great correlation with the structural mode. When the excitation force frequency get close to the natural frequency of the structure, strong vibration and sound radiation will occur. Therefore, it is very important and meaningful to study the vibration characteristics and protection methods of ship structures. Based on the classic finite element method, this article studies the influence of structural forms and parameters on the vibration characteristics of typical ship structures. Taking the multicabin structure as a benchmark structure model, the influence of the structural form on vibration mode and transmission characteristics of the target deck and other cabin decks in the multicabin structure was analyzed. Then, without changing the original structural layout, the effects of different structural parameters on the vibration mode and transmission characteristics were analyzed. Finally, the vibration protection process of the ship structure was formed. The results of this study can provide methodological basis and data reference for relevant research in future.
Highlights
For the plate or multicabin structure of ships, the vibration transmission characteristics have a great correlation with the structural mode
Korgesaar et al [14] carried out a research on the response of the ice-strengthened grillage frames under a certain pressure range. He et al [15] combined the theory of two-dimensional plate energy flow and finite element method (FEM), studied the vibration transmission characteristics of coupled plates under medium–low frequency excitation
The vibration characteristics of C cabin deck with beams, longitudinal bones, or additional pillars are not considered in the calculation and analysis, and the influence of structure form on the vibration characteristics of the structure is compared with the reference structure
Summary
Abstract: For the plate or multicabin structure of ships, the vibration transmission characteristics have a great correlation with the structural mode. Korgesaar et al [14] carried out a research on the response of the ice-strengthened grillage frames under a certain pressure range He et al [15] combined the theory of two-dimensional plate energy flow and FEM, studied the vibration transmission characteristics of coupled plates under medium–low frequency excitation. Tang et al [32] carried out an experimental research on the vibration characteristics of compositereinforced sheet-beam structures It can be seen from the reviewed researches that many researches have focused on the free and forced vibration characteristics of beams, plates, grillages, cabins, and so on. Those studies have revealed the mechanism of vibration generation and the influence of simple structures. The results of this study can provide method basis and data reference for relevant research in future
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