船用低速机关键摩擦副建模分析与摩擦力无线测量验证

doi:10.3969/j.issn.1004-132X.2022.04.001

摘要/Abstract

摘要： 低速机结构复杂，其关键摩擦副的性能对船舶运营的经济性、安全性和稳定性有重要影响，然而，目前对低速机摩擦学问题的理论和试验研究很少。对船用低速机关键摩擦副进行建模分析，并对摩擦力进行无线测量验证。结合多体动力学和混合润滑理论建立了低速机关键摩擦副的多学科耦合仿真模型，实现对各摩擦副性能的预测；进而，基于间接测量思想，提出了低速机移动副摩擦力无线测量方法并开发了测量系统，在发火工况下实现了摩擦力的在线测量。研究结果显示：低速机摩擦力的仿真结果与试验结果趋势吻合，仿真和试验的最大摩擦力误差小于5%；十字头轴承的仿真载荷与试验载荷也吻合较好；低速机填料函的系统油消耗量仿真结果与试验观测值的误差小于3%。相关结果证明了所提建模和测量方法的可行性，为低速机摩擦学设计和节能减排提供了支持。

关键词: 船用低速机, 摩擦动力学, 多学科耦合建模, 摩擦力无线测量, 节能减排

Abstract: Tribological properties of low-speed marine diesel engines possessed an important impact on the economy， safety， and stability of ship operations. However， there were few theoretical and experimental studies on the tribology of the engines. The modeling of key friction pairs were realized， and the friction was verified by wireless measurement herein. Firstly， combined with multi-body dynamics and mixed lubrication theory， the tribo-dynamics model of key friction pairs was established. Then， a wireless measurement method of friction force was proposed based on the idea of indirect measurement， and a measurement system was developed to realize the on-line measurement of friction forces under fired conditions. The results show that the simulation results of the friction are consistent with the experimental ones， and the maximum friction errors between the simulation and the experiments are less than 5%. The simulation load of the crosshead bearing is also in good agreement with the experimental load. In addition， for the system oil consumption of the stuffing box， the errors between simulation results and test ones are less than 3%. The results show that the modeling and measurement methods are feasible， and may provide support for tribological design， energy conservation and emission reduction of low-speed marine diesel engines.

Key words: , low-speed marine diesel engine, tribo-dynamics, multidisciplinary coupling modeling, wireless measurement of friction force, energy saving and emission reduction

中图分类号:

李瑞, 孟祥慧, 谢友柏. 船用低速机关键摩擦副建模分析与摩擦力无线测量验证[J]. 中国机械工程, 2022, 33(04): 380-387，396.

LI Rui, MENG Xianghui, XIE Youbai. Modeling Analysis of Key Friction Pairs in Low-speed Marine Diesel Engines and Verification of Friction Force Based on Wireless Measurement[J]. China Mechanical Engineering, 2022, 33(04): 380-387，396.

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链接本文: http://www.cmemo.org.cn/CN/10.3969/j.issn.1004-132X.2022.04.001

http://www.cmemo.org.cn/CN/Y2022/V33/I04/380

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