频率／波数谱在壳体振动分析中的应用

Analysis of Frequency/Wavenumber Spectrum on Vibration of Hull

本文从波动理论出发．推导了振动波场的测试理论．介绍了频率／波数谱分析方法。频率／波数谱不仅可提供领域信息．也可提供波数域信息．即波传播信息。用此法分析壳体结构的受激响应的结果表明．用这种方法研究结构振动具有其独特的优越性。

Based on the theory of wave motion the measuring theory and approach of frequency/wavenumber spectrum of vibration field are introduced. A frequency/wavcnumber spectrum includes not only the information of frequency domain,but that of wavenumber domain, i. e. wave propagation information. By means of this approach,the excitation respoce of a shell structure has been analysed.The results show its effectiveness.