摘要
为研究船舶推进系统在瞬态工况下的船机桨匹配特性及弹性联轴节参数(刚度和阻尼系数)对优化负载冲击响应的影响,综合考虑船舶主机、轴系、螺旋桨、阻力及弹性联轴节外部特性,细化船机桨动态匹配离散动力学模型。使用Simulink搭建仿真模型,以某四机双桨科考船为研究对象进行详细建模,并对来自主机和螺旋桨端负载冲击工况的匹配结果进行快速工程预报;通过参数分析评估不同联轴节参数对负载冲击响应的影响;结合该船实测航行数据,对匹配理论及仿真结果进行验证。结果表明:选取适当的弹性联轴节刚度和阻尼对削减系统冲击响应动态特性存在显著影响;刚度过低会加剧系统冲击,过高的刚度和阻尼系数会使系统趋向于全刚性响应,不利于削减冲击。这一结果在实船测试中得到进一步验证和支持。在实际工程应用中,适当选择联轴节刚度和阻尼有利于改善系统冲击响应特性。考虑弹性联轴节的船机桨匹配模型可为优化船舶动力系统的设计选型和拓展船机桨匹配应用提供指导。
To study the ship-engine-propeller matching characteristics under transient conditions and the influence of elastic coupling parameters(stiffness and damping coefficients)on the load shock response,the external characteristics of the ship's main engine,shaft,propeller,resistance,and elastic coupling are comprehensively considered,and the discrete dynamic model for the dynamic matching of the ship-engine-propeller system is refined.On this basis,a simulation model is built using Simulink.A specific four-engine,twin-propeller research vessel is used as the research object for detailed modeling.The model provides a rapid engineering prediction of the matching results under load shock conditions from both the main engine and the propeller ends.Through parameter analysis,the impact of coupling parameters on the load shock response is compared.Finally,the theoretical and simulation models are validated by combining actual navigation data from the simulation vessel.The results show that the elasticity of the coupling joint has a significant impact on the dynamic characteristics of the shock response,and appropriate damping coefficients can reduce the system shock.However,excessively high damping coefficients result in a fully rigid response.These results have been further verified and supported by real ship tests.In practical engineering applications,adjusting the stiffness and damping of the coupling joint appropriately improves the system's shock response.Considering the coupling joint in the ship-engine-propeller matching model provides guidance for optimizing the design and selection of marine power systems and expanding the application of ship-engine-propeller matching.
作者
张浩宇
武玉增
车驰东
孟成
ZHANG Haoyu;WU Yuzeng;CHE Chidong;MENG Cheng(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Marine Design and Research Institute of China,Shanghai 200011,China)
出处
《船舶工程》
CSCD
北大核心
2024年第9期64-72,共9页
Ship Engineering
关键词
船机桨匹配
多机多桨
弹性联轴节
负载冲击
ship-engine-propeller matching
multi-engine multi-propeller
elastic coupling
load shock
