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研究了波纹管壳结构中的振动波。运用摄动方法与结构振动的波动方法得到了波纹管结构波动解的形式 ;在此基础上考虑了振动波的频散特性。结果表明 :摄动波是以传播波和衰减驻波的形式存在 ;研究了振动波通过圆柱壳 -波纹壳不连续截面时的传播特点 ,从频散特性角度对弯曲波传播进行了解释。本文为工程实际中波纹管接头的降噪预报提供了一种理论方法
The vibration wave in the bellows shell structure is studied. By using the perturbation method and the structural vibration fluctuation method, the form of the wave solution of the bellows structure is obtained. Based on this, the dispersion characteristics of the vibration wave are considered. The results show that the perturbation wave exists in the form of propagating wave and standing wave attenuation. The propagation characteristics of the wave propagating through the discontinuous section of cylindrical shell and corrugated shell are studied. The propagation of bending wave is explained from the viewpoint of dispersion characteristic. This paper provides a theoretical method for noise reduction prediction of corrugated pipe joints in engineering practice