物体的非共振固有振动与谐波共振的区别实验研究

Experiment research of difference between nonresonant natural vibration and harmonic resonance of ob

摘要: 在非完全强迫振动系统中 ,当简谐策动频率是系统固有频率 1n(n=2 ,3 ,4 ,… )时 ,在非共振状态下系统也会产生固有振动 ,即称为非共振固有振动 .证明了它不是谐波共振 .区别是非共振固有振动的振幅可远大于策动源中同频谐波幅度不是等幅振动 ,而谐波共振时则不是这样 .

Abstract: Object can produce natural vibration when the frequency of sinusoidal driving is equal to 1n(n=2,3,4,...)of the system natural frequency.It is proved that the nonresonant natural vibration and harmonic wave resonance are two different kinds of vibration.