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J. Ocean Eng. Technol. 2001;15(2):135-140.    

Influence of a Moving Mass on Dynamic Behavior of a Simply Supported Pipe Conveying Fluid
단순지지 송수관의 동특성에 미치는 이동질량의 영향
윤한익
동의대학교 기계·산업시스템 공학부
© 2001 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Pipe conveying fluid, Moving mass, Dynamic behavior, Monconservative force, flutter
핵심용어: 송수관, 이동질량, 동특성, 비보존력, 플러터
Abstract
A simply supported pipe conveying fluid and a moving mass upon it constitute a vibrational system. The equation of motion is derived by using Lagrange's equation. The influence of the velocity and the inertia force of a moving mass and the velocities of fluid flow in the pipe have been studied on the dynamic behavior of a simply supported pipe by numerical method. The velocities of fluid low are considered within its critical values of the simply supported pipe without a moving mass upon it. Their coupling effects on the transverse vibration of a simply supported pipe are inspected too. as the velocity of a moving mass increases, the deflection of midspan of a simply supported pipe conveying fluid is increased and the frequency of transverse vibration of the pipe is not varied. Increasing of the velocity of fluid flow makes the frequency of transverse vibration of the simply supported pipe conveying fluid decrease and the deflection of midspan of the pipe increase. The deflection of the simply supported pipe conveying fluid is increased by a coupling of the moving mass and the velocities of a moving mass and fluid flow.


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