横摇下弹性安装动力装置联轴器补偿特性

Coupling Compensation Characteristics of Flexible Installed Powerplant Considering Ship Lateral Swing

为达到噪声指标,舰船动力装置普遍采用弹性安装,该种方式对横摇工况下动力装置与轴系连接的联轴器补偿量提出了更高的要求。通过建立舰船动力装置-推进轴系全系统有限元模型,提出横摇工况下弹性安装动力装置的联轴器补偿量分析方法,获取不同横摇工况下联轴器补偿量需求,并利用试验台架试验验证了模型的准确性。研究结果表明,联轴器刚度的增大有利于降低摇摆工况下的补偿量要求,但会给邻近的支承轴承增加负荷;在设计弹性安装动力装置-推进系统的联轴器时,应对刚度、补偿量与支承轴承载荷进行协同考虑。研究结果可为低噪声舰船动力装置联轴器设计提供技术支撑。

In order to meet the requirements of the noise index,the marine powerplant is flexible installed,which places higher demands on the compensation of coupling connecting the powerplant to the shaft system under lateral swing working conditions.By establishing a finite element model of the whole system of the ship’s powerplant-propulsion shaft system,the analysis method of the coupling compensation of the flexible installed powerplant under different lateral swing working conditions is proposed,and the demand of the coupling compensation is obtained.The accuracy of the model is verified by the test carrying in a test rig.The test and simulation results indicate that the increased stiffness of the coupling reduces the values of compensation required under lateral swing working conditions,but increases the load on the adjacent support bearings.The coordination of stiffness,compensation and bearing loads should be considered during the design process of couplings for the flexible installed powerplant-propulsion shaft system.It can provide technical support for the coupling design of low-noise marine powerplant.