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Vibration Control of Flexible Structures by using Conveying Fluid Pipe  

류시웅 (한국기초과학지원연구원)
김건희 (한국기초과학지원연구)
공창덕 (조선대학교 항공우주공학)
오경원 (조선대학교 항공우주공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.8, no.2, 2004 , pp. 25-31 More about this Journal
Abstract
This paper describes a new vibration-suppression technique for flexible cantilevered structures by using a pipe containing an internal flow. The stability and dynamic response are analyzed based on the finite element method. The flutter limit and optimum stabilizing fluid velocity are determined in root locus diagrams. The impulse responses of the system are studied by the mode superposition method to observe the damping rate of the motion. The stabilizing effect of an internal flow is demonstrated by impulse responses of the structures with and without an material damping. It is found that the response of the pipe with flow of liquid has a larger effect of, stabilizing than that with flow of gas.
Keywords
Flexible Structures; Conveying Fluid Pipe; Impulse Response; Optimum Stabilizing Fluid Velocity; Material Damping;
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