舰船动力轴系冲击响应性能分析

Shock response analysis of a ship power shafting system

介绍了舰船轴系冲击激励的类型、基于有限元法建立的轴系冲击动力学模型以及基于有限元法在MAT-LAB平台上开发的舰船轴系动力学及冲击性能仿真平台(SHAFTFE)的基本功能,用SHAFTFE建立了一个包括推进轴系、推进电机和推进电机隔振器在内的整个动力轴系模型,计算了在不同冲击强度和动力轴系参数条件下整个动力轴系的冲击性能,分析了动力轴系的结构设计参数对动力轴系冲击性能的影响。结果表明,动力轴系在冲击作用下会出现较大的位移,因此在舰船动力轴系的设计中必须对轴系的冲击特性引起足够的重视,以增强整船的可靠性和生存能力。

The types of shock impulse of ship shafting systems were introduced.Shock dynamic model of a ship shafting system was built with finite element method,and a software（SHAFTFE） for ship shafting system dynamics and shock response simulation was developed with MATLAB.Dynamic characteristics of a ship power shafting system including propulsion shafting,propulsion electric motor and its vibration isolator were analyzed using SHAFTFE with different shock forces and parameters,and effects of the structural design parameters of the ship shafting system on the shock response were analyzed.The results showed that the ship power shafting system has a larger displacement under the action of the base shock,so more attention must be paid to the shock character of ship power shafting systems during design in order to increase reliability and survival performance of a whole ship.