圆柱壳振动传播特性的波矢分析

波矢分析是在频率波数域研究波动传播特性的一种方法，本文以圆柱壳为对象，运用这一方法对其中振动波的传播特性进行了研究。通过试验和分析，得到了圆柱壳中振动波的波数，波速和波型，识别出主要子波及其传播方向，这对于振幅噪声的控制具有重要意义，经与理论分析结果相比较，表明波矢分析的结果是正确的。

WAVE-VECTOR ANALYSIS OF VIBRATION TRANSMITTING CHARACTERISTICS OF A CYLINDRICAL SHELL

Wave vector analysis is a technique for analyzing the characteristics of wave propagation such as frequency and wave number. A cylindrical shell was taken as a tested model, and the propagating characteristics of vibration waves in it were studied by means of this technique. By test and analysis, the wave numbers, propagating speeds and types of vibration waves in the cylindrical shell were obtained, and some dominant wave components and their propagating directions were identified too. With the information, some effective measures may be chosen to control or reduce the transmitted energy of dominant wave components, so as to reduce structural vibration and noise. So the information acquired by wave vector analysis are of great importance to the active control and reduction of structural vibration and noise. Comparing with the result of theoretical analysis, it indicates that the result acquired by wave vector analysis is reasonable.