轴-艇耦合系统的力传递特性分析

螺旋桨与水下伴流场产生的脉动激振力是潜艇振动的一个重要激励源.潜艇的主要结构是推进轴系与壳体耦合结构,螺旋桨产生的激振力通过轴系经尾轴承、中间轴承及推力轴承作用于艇体激起艇体振动.目前降低轴系引起外壳体的振动有降低螺旋桨的脉动激振力和改善轴系与壳体之间的减震装置2种方法.在降低螺旋桨脉动激振力较困难的情况下,研究激振力经轴系传递到壳体的路径,就对改善减震装置、降低壳体振动有重要意义.

Coupling characteristic and mechanism of the thrust and hull system of submarine

Pulse excitation generated by underwater propeller is an important source of submarine vibration. The main structure of the submarine is thrust system and the hull system. The exciting force generated by the propeller shaft though the bearing to excite the hull submarine. At present, there are two ways to reduce the vibration: reducing pulse excitation of the propeller and improving the damping device between the bearing and the hull. When to reduce the propeller exciting force is difficult, it is important to research the transfer of exciting from thrust system to the hull system.