电力推进船舶轴系冲击响应分析

Impact Response Analysis of Electric Propulsion Ship Shafting

介绍了电力推进轴系不同的冲击载荷类型,以集总参数模型为基础,建立推进轴系当量模型,分析螺旋桨-冰块扭转激励对动力轴系影响,建立推进轴系结构耦合模型,分析冲击加速度激励作用下推进轴系的振动位移,计算结果表明,螺旋桨-冰块转矩对电力推进轴系有着明显的周期性影响,冲击加速度激励使推进轴系产生较大的振动位移。

Different kinds of impact load of electric propulsion shafting are introduced.Based on the lumped parameter model,propulsion shafting equivalent model is established,the propeller-ice reverse incentive effect on dynamic axis is analyzed,propulsion shafting structure coupling model is established.This paper analyzes the vibration displacement of the propulsion shaft system under the excitation of impact acceleration.The results show that the propeller-ice torque has obvious cyclical impact on electric propulsion shafting,impact acceleration excitation causes the propulsion shafting to produce a large vibration displacement.