音叉作受迫振动的速度共振幅频响应曲线的研究  

Study on amplitude-frequency response of velocity resonance in forced vibration

作　　者：陈思[1] 陈骏逸[1] 

机构地区：[1]复旦大学物理系,上海200433

出　　处：《实验技术与管理》2007年第12期48-50,56,共4页Experimental Technology and Management

摘　　要：在音叉作“受迫振动与共振”实验中，运用计算机对音叉作受迫振动的幅频响应曲线进行了精确测量，测到速度共振幅频响应曲线，研究了该曲线与位移共振幅频响应曲线在规律与特性上的区别。这一结果对教学和物理规律的深入研究将有很大帮助。In the experiment of ＂forced vibration and resonance＂, curve response to amplitude-frequency is meastired accurately with computer. The distinction is observed which is between amplitude- frequency response of velocity resonance and amplitude- frequency response of displacement resonance in rule and characteristic. It has been found that the curve which is gotten in the experiment of forced vibration and resonance which uses magnetic core loop as detective loop accords with amplitude- frequency response of velocity resonance vibration in forced vibration but not amplitude-frequency response of displacement resonance which is considered as usual. The result will have much help to teaching and further research on physics rules.

关 键 词：受迫振动 共振 速度振幅 位移振幅 

分 类 号：O321[理学—一般力学与力学基础] G642.423[理学—力学]