阻尼比
固有频率
情态动词
频率响应
模态分析
模态试验
共振(粒子物理)
低频
财产(哲学)
数学
物理
声学
数学分析
材料科学
振动
工程类
原子物理学
高分子化学
电气工程
哲学
认识论
天文
作者
Michael V. Drexel,Jerry H. Ginsberg
出处
期刊:Journal of Vibration and Acoustics
日期:2000-12-01
卷期号:123 (3): 403-405
被引量:4
摘要
Several experimental modal analysis techniques fit resonance peaks to the response curves of a single degree of freedom system in order to identify the natural frequencies and modal damping ratios. The present study identifies a fundamental property of frequency response curves that allows the natural frequency to be identified from a simple characteristic of the curve, independently of the damping ratio. After the natural frequency has been determined, the damping ratio can be computed directly. The fundamental property holds for all values of damping, which eliminates the need to approximate either the natural frequency or damping ratio.
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