船舶推进系统与船体结构的耦合技术是目前船舶研究的重要方向，需要在基本理论、试验方法和研究手段等各个方面进行跨学科的创新性深入研究。根据船舶推进系统的主要激励形式，确定船体艉部结构垂向振动分析的关键频率，通过关键频率对船体艉部结构垂向振动与船舶推进系统特性进行关联性分析，同时也分析油膜涡动对船体艉部结构垂向振动的影响程度，为船舶推进系统振动传递规律和油膜涡动理论方面研究提供一些有意义的结论和参考。%The coupling between propulsion system and ship structure is a project worth studying. It is an interdisciplinary research to be carried out with basic theories, test methods and research methods. In this paper, main excitations of the ship’s propulsion system are analyzed to determine some key frequencies. The correlation between vertical vibration of stern structure and ship’s propulsion system characteristics is analyzed according to the key frequencies. And the level of oil film whirl effecting on vertical vibration of the stern structure is also analyzed. This work is of significance and reference value for further study of vibration transfer rules and oil film whirl theory of the ship’s propulsion systems.
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