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.
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.
出处
《大学物理》
北大核心
2010年第3期1-6,11,共7页
College Physics
关键词
静摩擦
滑动摩擦
简谐振动
旋转矢量图
rest friction
slipping friction
simple harmonious vibration
turning-vector circle
