噪声与振动控制

噪声与振动控制 ›› 2013, Vol. 33 ›› Issue (5): 4-9.DOI: 10.3969/j.issn.1006-1335.2013.05.002

• 2.振动理论与数值解法 • 上一篇    下一篇

摩擦力作用下推进轴系弯—扭耦合振动特性分析

覃文源，张志谊，华宏星   

  1. （ 上海交通大学  机械系统与振动国家重点实验室，  上海  200240 ）
  • 收稿日期:2013-01-04 修回日期:2013-01-13 出版日期:2013-10-18 发布日期:2013-10-15
  • 通讯作者: 覃文源
  • 基金资助:

    国家自然科学基金

Bending and Torsional Coupled Vibration of a Propulsion Shafting System Excited by Friction Force

  • Received:2013-01-04 Revised:2013-01-13 Online:2013-10-18 Published:2013-10-15

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摘要：

推进轴系的艉轴承负荷受螺旋桨、轴系对中等因素影响，不合理设计或安装可能导致轴承润滑不良，使轴颈与橡胶轴承间容易存在“粘着—滑动”状态，进而导致轴系的弯曲、扭转振动异常。通过简化的推进轴系模型，从机理上分析轴系在艉部橡胶轴承摩擦力作用下的弯-扭耦合振动特性及其主要影响因素，为识别轴系异常振动和噪声提供参考。

关键词: 振动与波； 推进轴系； 弯&mdash, 扭振动耦合；自激振动

Abstract:

Abstract: The load state of the stern bearing of the propulsion shafting system is affected by factors such as the propeller and the shafting alignment. Unreasonable design or installation of the shafting system will result in poor lubrication of the rubber bearing, which probably causes the stick-slip motion between the shaft and the bearing and abnormal bending and torsional vibration of the shafting system. In this paper, the bending and torsional vibration induced by the friction between the stern bearing and the propulsion shaft is analyzed thoeretically, revealing the characteristics of friction induced shaft vibration and noise.

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