Seismic response reduction of a piping system by a dynamic vibration absorber
- National Research Inst. for Earth Science and Disaster Prevention, Tsukuba (Japan)
- Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama (Japan)
A number of studies have been conducted on seismic response reduction technique of piping systems. Among them, seismic supports including elastic-plastic damping devices are rapidly being developed for real application. Dynamic vibration absorbers, which are directly attached to pipe, provide another technique for seismic response reduction. When they are successfully applied to a piping system, they can reduce the number of supports with rigid structures and can be useful for improvement of piping layout. In order to obtain above improvements by the dynamic vibration absorbers, its effectiveness in reducing the large vibration response of the piping system must be verified under the strong earthquake condition. Typical problems to be solved are strength of device against strong excitation, adaptation for multimode`s vibration of pipe, and performance with non-linear behavior of pipe system. Shake table tests are very effective to investigate these problems. The authors have developed a dynamic vibration absorber which uses an air cylinder coil spring and magnetic damping devices and applied it to a real scale piping model. Vibration test results using 3-dimensional piping model have shown the good performance of the absorber, although some problems remain to be solved before actual application. In this paper the authors report the performance of this newly developed dynamic vibration absorber for seismic response reduction of piping systems.
- OSTI ID:
- 124712
- Report Number(s):
- CONF-950740-; ISBN 0-7918-1332-0; TRN: IM9548%%302
- 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 Developments in pressure vessels and piping 1995. PVP-Volume 301; Petrinec, J.N. Jr.; Aggarwal, M.; Becht, C. IV; Bond, C.B.; Dermenjian, A.A.; Fisher, H.D.; Kobayashi, H.; Williams, D.K. [eds.]; PB: 257 p.
- Country of Publication:
- United States
- Language:
- English
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