Modal Analysis of a Butterfly Valve with Different Stiffening Elements

This paper presents a study regarding the possibility to set the natural frequencies of butterfly valve disks by the properly designing the stiffening ribs. To control the dynamic behavior of the valve disk is important, because, in some cases, the disk natural frequency is close to the frequency of...

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Bibliographic Details
Published inRomanian Journal of Acoustics and Vibration Vol. 13; no. 1; p. 11
Main Authors Tufoi, Marius, Gillich, Gilbert-Rainer, Praisach, Zeno-Iosif, Korka, Zoltan Iosif, Hatiegan, Cornel
Format Journal Article
LanguageEnglish
Published Bucharest Romanian Acoustic Society 01.01.2016
Subjects
Butterfly valves
Computational fluid dynamics
Disks
Resonant frequency
Ribs
Stiffening
Valves
Vibration
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Summary:This paper presents a study regarding the possibility to set the natural frequencies of butterfly valve disks by the properly designing the stiffening ribs. To control the dynamic behavior of the valve disk is important, because, in some cases, the disk natural frequency is close to the frequency of vortex shedding occurring due to fluid flow when the valve is partially or fully open. This phenomenon lead to resonance and thus vibration with important amplitudes is expected. Such a locked in disk is undesired; the incident can be avoided if the disk is designed in order to have the fundamental frequency higher as the expected shedding frequency. The modal analysis is performed by means of the finite element method and reveal the way how it is possible to control the disk's natural frequencies by the stiffening ribs shape.
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ISSN:1584-7284
2602-0351