摘要
本文介绍了在一个结构中如何同时测量几个激励力的一种方法。该方法称为能量交换原理,它是在互易原理的基础上建立起来的。该试验给出的误差只有几个分贝,而相位误差与实际值吻合得很好。
A method to measure several forces exciting a structure simultaneously is proposed. It is based on the theorem of exchange energies which can be considered as a multiple application of the reciprocity principle. First experiments using the method showed measure errors to be only a few dB. The calculated phases agreed reasonably well with the measured data. It is recommended to use more than the minimum number of measuring points to increase the reliability of the method.
出处
《车辆与动力技术》
北大核心
1989年第3期29-36,65,共9页
Vehicle & Power Technology
关键词
测量方法
能量交换
激励的力
measure method
exchange energies
forces exciting
