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本文提出对于轻阻尼多自由度系统,可以自然地把单自由度系统峰值振幅转速的概念推广为共振转速区的概念。作为近似判断,可使用条件共振转速。对于一般阻尼较大的系统,宜于讨论时间域中的影响函数或频率域中的传递函数,讨论共振转速等概念是无益的。本文还简单地讨论了共振转速区宽度和激振力配置间关系的计算方法。
This paper proposes that for lightly damped multi-degree of freedom system, the concept of single-degree-of-freedom peak-to-peak rotational speed can naturally be generalized to the concept of resonant speed zone. As an approximation, conditional resonance speed may be used. For systems with large damping, it is advisable to discuss the influence function in the time domain or the transfer function in the frequency domain. It is of no use to discuss such concepts as resonance speed. This article also briefly discusses the calculation of the relationship between the width of the resonant speed zone and the excitation force configuration.