An estimation method of equivalent masses for a multi-degree of freedom system.
An estimation method of equivalent masses for a multi-degree of freedom system.
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一种多自由度系统等效质量估计方法。
DOI：
10.1299/kikaic.53.52
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
A. Nagamatsu
中科院分区：
文献类型：
--
作者：
K. Seto;M. Ookuma;S. Yamashita;A. Nagamatsu
为了实现振动控制器的优化设计，以抑制机器结构的多个共振峰，需要知道控制器安装位置处的等效质量。本文提出了两种估算等效质量的方法：一种是模态分析法，另一种是质量响应法，它利用了附加质量时结构固有频率的变化。第一种方法适用于识别具有“物理意义”的模态质量，而第二种方法最适用于实验分析。通过对三种机械结构的分析，比较了这三种方法的精度。
To attain optimum design of vibration cotrollers to suppress many resonance peaks of machine structures, it is necessary to know the equivalent mass at the mounting location of the controller. This paper shows two ways for estimating the equivalent mass : one is the modal analysis method, and the other is called the mass responsive method, which utilizes the variation of the natural frequency of the structure when an additional mass is attached. The first method mentioned is useful to identify modal mass having "physical meaning", while the other method is most suitable for application in the experimental analysis. The accuracy of these methods are compared with each other by applying them to three kinds of mechanical structure.