Причины возникновения колебаний сильфонных компенсаторов и анализ их частотных характеристик

Abstract

The article describes various types and sources of flexible metal hoses (FMH) vibrations. Depending on the direction of vibration displacements, basic variations of sleeves vibrations has been identified: transversal, longitudinal and torsion. The distinguished forces, which excite vibrations in FMH, acting on it, has been divided into static and dynamic loads. The most common type of vibrations - transverse vibrations of flexible sleeves has been considered in more details. Also have been investigated ripples - one of the main triggers of transverse vibrations, which significantly degrade the hydraulic performance of pipeline communications. The paper presents the analysis of the characteristics of the bending and longitudinal stiffness, which implies that the stiffness increases with growing internal pressure, the diameter of the sleeve and the number of braids. To determine the frequency characteristics of FMHs, the bar, with reduced parameters of elasticity and mass, has been chosen as FMH mathematical model, also have been studied results of A. I. Kryukov researches of the influence of various factors on the of metal sleeves own frequencies.