• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (17): 226-234.doi: 10.3901/JME.2018.17.226

• 机械动力学 • 上一篇    下一篇

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舰船摇摆作用下滑动轴承-齿轮副系统动力学分析

刘镇星1, 刘占生1, 于香宇1, 庞学佳2   

  1. 1. 哈尔滨工业大学能源科学与工程学院 哈尔滨 150001;
    2. 中国船舶重工集团公司第七零三研究所 哈尔滨 150078
  • 收稿日期:2017-09-27 修回日期:2017-12-14 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: 刘镇星(通信作者),男,1988年出生,博士研究生。主要研究方向为齿轮系统动力学、转子动力学。E-mail:liuzx_hit@qq.com
  • 作者简介:刘占生,男,1962年出生,博士,教授,博士研究生导师。主要研究方向为转子动力学、旋转机械故障诊断、非线性振动。E-mail:lzs@hit.edu.cn

Dynamic Analysis of Journal Bearing-gear System under Swing Movement of the Ship

LIU Zhenxing1, LIU Zhansheng1, YU Xiangyu1, PANG Xuejia2   

  1. 1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001;
    2. The 703 Research Institute of CSIC, Harbin 150078
  • Received:2017-09-27 Revised:2017-12-14 Online:2018-09-05 Published:2018-09-05

摘要: 在舰船摇摆作用下,利用拉格朗日方程建立滑动轴承-齿轮副系统动力学模型。模型中引入非线性油膜力,将齿面、齿背侧啮合力同时考虑。计算了不同输入转速、扭矩作用下齿轮轴静平衡位置,及船体纵横摇摆下齿轮副的振动响应。为研究齿轮副相对于摇心偏置位置的影响作用,计算了不同偏置位置下系统的位移、啮合力及油膜力变化情况,发现随着偏置距离的增加,齿轮的振动响应、轴承油膜力幅值明显增大,油膜力方向大范围波动。此外观察了较小齿侧间隙下摇摆引起的挤齿现象,发现挤齿现象可仅在一侧偏置方向上发生。从齿轮及轴承安全性角度,为舰船设计中齿轮箱布置位置提供理论参考。

关键词: 齿轮动力学, 齿轮箱布置位置, 滑动轴承, 舰船摇摆

Abstract: Under the swing motion of the ship,dynamic model of the journal bearing-gear system is established. The nonlinearity of the oil-film force and tooth force on drive-side and back-side are considered simultaneously. The equilibrium positions under different input rotation speeds and torques are calculated. Swing-induced system responses are simulated. The influence of the gear box position respect with swing center is examined by presenting displacement response,tooth force and bearing force. The results show that amplitudes of gear vibration and journal bearing force are remarkably enlarged with the increasing of the radius of the ship swing motion,the direction of the oil-film force varies greatly. Under a small backlash,tooth wedging phenomenon is observed and it may happen in a single direction respect with rotation center of the ship body. From the perspective of the safety for the gear and the bearing, this study provides reference for the design of the gear box position.

Key words: gear dynamics, journal bearing, position of gear box, swing motion of the ship

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