Passive control of piping vibration by ``Houde damper`` using magnetic damping
- Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama (Japan)
- Toshiba Corp., Yokohama (Japan)
This paper presents the experimental results that demonstrate the vibration suppression effectiveness of a Houde damper. The Houde damper was applied to the actual 3-D piping system to suppress its vibration caused by internal fluid flow, and the amplitude of the vibration was reduced to 1/2 {approximately} 1/10. The Houde damper is a type of dynamic vibration absorber that contains an auxiliary mass and a damping element. The damper that was developed uses an eddy current brake consisting of a pair of permanent magnets and a copper plate which acts as a conductor. A vibration test using a straight piping model was conducted to show that the Houde damper is effective not only in reducing small amplitude vibrations, but large amplitude vibrations as well. Analytical calculations were used to establish that the precise tuning required for effective vibration suppression using a conventional dynamic absorber (that is, a passively tuned mass damper) is not necessary for the Houde damper.
- OSTI ID:
- 136844
- Report Number(s):
- CONF-950740-; ISBN 0-7918-1344-4; TRN: 96:000958
- Resource Relation:
- Conference: Joint American Society of Mechanical Engineers (ASME)/Japan Society of Mechanical Engineers (JSME) pressure vessels and piping conference, Honolulu, HI (United States), 23-27 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of International pressure vessels and piping codes and standards. Volume 2: Current perspectives; PVP-Volume 313-2; Rao, K.R.; Asada, Yasuhide; Adams, T.M. [eds.] [and others]; PB: 505 p.
- Country of Publication:
- United States
- Language:
- English
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