本文研究出一种可用于计算冰载荷下柴油机推进轴系扭振的数值方法。先介绍了轴系扭振Newmark时域计算方法理论，针对一个多用途船的柴油机推进轴系，应用该计算方法，对柴油机稳定运行工况下的瞬态扭振进行仿真计算，将时域与频域计算结果进行对比，验证了该数值方法的可应用性；同时，在考虑柴油机调速器的情况下，利用刚性轴模型推导出相关激励载荷，并结合上述时域方法计算了额定转速时冰载荷下轴系的扭振响应，得到了轴系的最大响应幅值，并与无冰载荷冲击下的结果进行对比分析。
A numerical method for the torsional vibration of the diesel propulsion shafting under ice impact is studied. The Newmark time-domain method of the torsional vibration of the propulsion shafting is first introduced. To the diesel propulsion shafting of a MPC Ship, using this method, the diesel transient torsional vibration in steady condition is calculated, the time-domain calculation methods and the frequency domain results is compared, the reasonability of the time-domain method is verified; considering diesel controller, the related loads are derived with rigid shafting, the shaft torsional vibration domain response is calculated in the rated speed under ice impact, the maximum response amplitude of the shafting is achieved and compared with the result of no ice impacting.
2018,40(8): 85-91 收稿日期：2017-09-20
DOI：10.3404/j.issn.1672-7649.2018.08.017
分类号：U664
作者简介：吴帅(1988-),男,助理工程师,研究方向为减振降噪
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