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本文以复模态理论为基础,导出了振动系统频域模态分析理论,介绍了频域法程序设计思想与法,最后给出了对一标准悬臂梁结构进行试验和分析的结果,表明与国外引进的先进设备分析所得的结果相符。
In this paper, based on complex modal theory, the theory of frequency domain modal analysis of vibration system is deduced. The design idea and method of frequency domain method are introduced. Finally, the results of testing and analyzing a standard cantilever beam structure are given. The result of advanced equipment analysis introduced abroad is consistent.