Dynamic stability of pipeline with concentrated dampers
The article indicates that pipes with a liquid flowing through them are one of the most common elements in various fields of industry. Pipelines in oil and gas and a number of other industries have valves and connections that can be modeled as concentrated masses. It is very important to consider their impact when investigating the dynamic behavior of pipelines. Developing fluctuations are the subject of research by many scientists. The article investigates a pipe with a static scheme of a beam freely lying on the supports with concentrated dampers. The stability of the system consisting of a pipe with concentrated dampers and a liquid flowing through it is investigated. The spectral Galerkin method is used to determine the critical fluid velocity. On the basis of theoretical studies, it has been established that a pipeline system with dampers loses its stability at 1.26 times lower fluid flow rate (V<sub>av</sub> = 122. 67, m/s) than in the case without dampers (V<sub>av</sub> = 155 m/s).