Abstract
The stability of the marine propulsion system is significantly influenced by the load applied to the propeller and its own inertial effect. This paper focuses on the investigation of the propulsion system powered by double-cylinder turbines under unsymmetric input power, aiming to understand its dynamics through theoretical modeling, numerical simulation, and experimental verification. Firstly, a nonlinear dynamic model of the system is established considering the time-varying and nonlinear internal factors including meshing stiffness, tooth surface friction, tooth side clearance, and the unsymmetrical external input power. Subsequently, numerical methods are employed to explore the effects of the load on the propeller and its own rotational inertia on the stability and vibration characteristics of the propulsion system. The study describes the complex dynamic behavior that emerges due to these influencing parameters. Finally, the theoretical model is validated, and a comprehensive experimental platform for parallel propulsion systems is utilized to further investigate the impact of the load and rotational inertia on the vibro-acoustic characteristics of the system. The findings serve as valuable guidance for the design of power parameters and the optimization of propellers for the propulsion system characterized by parallel power configuration from the perspective of dynamics.
摘要
船舶推进系统稳定性受到施加在螺旋桨上的负载及其本身的惯性效应的综合影响. 论文聚焦非对称动力输入下的双缸推进系 统, 旨在通过理论建模、数值仿真和实验验证探究推进系统的动力学行为及其影响因素. 首先, 考虑传动系统的啮合刚度、齿面摩 擦、齿侧间隙、非对称激励等时变、非线性因素, 建立推进系统非线性动力学模型. 其次, 采用数值方法研究桨端负载及其惯性效应 对于推进系统稳定性和振动响应的影响, 揭示多参数影响下的系统复杂的动力学行为. 最后, 基于理论模型, 构建并联推进系统综合实 验平台, 进一步研究了负载和惯性效应对于推进系统声振特性的影响. 研究结果对于从动力学角度进行系统动力参数的设计和螺旋桨 的结构优化具有积极意义.
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Acknowledgements
This work was supported by the Natural Science Foundation of Jiangsu Province (Grant No. BK20230925), and the National Natural Science Foundation of China (Grant Nos. 12372055 and 52375110).
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Author contributions Jianghai Xu: Conceptualization, Data curation, Methodology, Writing–original draft, Writing–review & editing. Lin Xue: Data curation, Investigation, Software, Writing–original draft. Donglin Zou: Software, Funding acquisition, Validation. Chunxiao Jiao: Methodology, Software, Investigation. Na Ta: Conceptualization, Formal analysis, Validation. Zhushi Rao: Conceptualization, Resources, Supervision, Writing–review & editing.
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Xu, J., Xue, L., Zou, D. et al. Dynamic investigation of the influence of propeller on the vibro-acoustic characteristics of marine propulsion systems. Acta Mech. Sin. 40, 523330 (2024). https://doi.org/10.1007/s10409-023-23330-x
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DOI: https://doi.org/10.1007/s10409-023-23330-x