大学物理 ›› 2010, Vol. 29 ›› Issue (3): 1-1.

• 著者文摘 •    下一篇

干摩擦引起自激振动现象研究

路峻岭 王长江 秦联华 李复   

  1. 清华大学物理系,北京100084
  • 出版日期:2010-03-25 发布日期:2010-03-20

Investigation on the phenomenon of self-excited vibration by dry friction

  • Online:2010-03-25 Published:2010-03-20

摘要: 对干摩擦引起自激振动现象进行分析,得到了其解析表达式,对振动过程进行了详细的分析,画出了振动曲线和相图,说明这就是弦弓乐器发出优美声乐的物理原因.

关键词: 静摩擦, 滑动摩擦, 简谐振动, 旋转矢量图

Abstract: The phenomena of self-excited vibration by dry friction is studied and the analytic expression is obtained. So its vibration curve and phase plot show the physical causes of a string-bow musical instrument sending out sweet tone.

Key words: rest friction, slipping friction, simple harmonious vibration, turning-vector circle

中图分类号: 

  • O343