胡云飞, 周瑞平, 徐勇, 祝泽强. MTU柴油机推进轴系的联轴器匹配研究及扭振特性预报[J]. 中国舰船研究, 2019, 14(4): 120-127. DOI: 10.19693/j.issn.1673-3185.01244
引用本文: 胡云飞, 周瑞平, 徐勇, 祝泽强. MTU柴油机推进轴系的联轴器匹配研究及扭振特性预报[J]. 中国舰船研究, 2019, 14(4): 120-127. DOI: 10.19693/j.issn.1673-3185.01244
shu
Hu Yunfei, Zhou Ruiping, Xu Yong, Zhu Zeqiang. Coupling matching research and torsional vibration characteristics prediction of MTU diesel propulsion shaft system[J]. Chinese Journal of Ship Research, 2019, 14(4): 120-127. DOI: 10.19693/j.issn.1673-3185.01244
Citation: Hu Yunfei, Zhou Ruiping, Xu Yong, Zhu Zeqiang. Coupling matching research and torsional vibration characteristics prediction of MTU diesel propulsion shaft system[J]. Chinese Journal of Ship Research, 2019, 14(4): 120-127. DOI: 10.19693/j.issn.1673-3185.01244
shu

MTU柴油机推进轴系的联轴器匹配研究及扭振特性预报

Coupling matching research and torsional vibration characteristics prediction of MTU diesel propulsion shaft system

    摘要
  • 摘要:
      目的  为明确中、高速柴油机与多弹性联轴器匹配的扭振计算方法及推进轴系扭振特性，
      方法  以某船MTU柴油机推进轴系为研究对象，分析与之匹配的多弹性联轴器选型方法，建立MTU柴油机推进轴系的扭振计算模型，分析MTU柴油机的激励特性和推进轴系扭振特性，开展MTU柴油机与多弹性联轴器匹配系列轴系的扭振特性预报，并提出基于实测振幅和解析法的阻尼修正推算方法，用以修正轴系扭振特性的预报结果。
      结果  研究结果表明：实测共振频率与计算频率吻合；经修正，共振转速处的曲轴应力降低了16%，弹性联轴器的振动扭矩降低了15%，验证了扭振计算方法的正确性。
      结论  所得结论可为后续同型舰船的轴系扭振分析提供工程参考。

     

    Abstract:
      Objectives  To clarify the torsional vibration calculation method for matching the medium-high speed diesel engine with the multi-elastic coupling, and to obtain the torsional vibration characteristics,
      Methods  taking a MTU diesel engine propulsion shaft system as the study object, the matching method of multi-elastic coupling was studied, and the calculation model of MTU diesel propulsion shaft torsional vibration was established. The excitation characteristics of MTU diesel engine and the torsional vibration characteristics of the propulsion shaft were analyzed. The prediction of torsional vibration characteristics of MTU diesel engine and multi-elastic coupling matching series was carried out. Based on the measured amplitude, the damping correction calculation method based on analytical method was proposed to correct the prediction results of torsional vibration characteristics of shaft system.
      Results  This research shows that measured resonant frequency matches the calculated frequency, after correction, the crankshaft stress at the resonant speed is reduced by 16%, and the vibration torque of the elastic coupling is reduced by 15%. The correctness of the torsional vibration calculation method is verified.
      Conclusions  The results of this research can provide engineering reference for the torsional vibration analysis of the same type of warship.

     

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