Pendulum Tuned Mass Dampers for Floor Vibration Control
Publication: Journal of Performance of Constructed Facilities
Volume 20, Issue 1
Abstract
This paper presents the results of the analytical and experimental studies of a pendulum tuned mass damper (PTMD) to control excessive floor vibrations due to human movements. The PTMD used in this study acts as a passive tuned mass damper. An equivalent single-degree-of-freedom model for the PTMD is developed and used to derive the equations of motion of the coupled PTMD-floor system. The optimal design parameters of the PTMD are found using an optimization algorithm. Effects of off-tuning of the PTMD due to the variations in the floor mass on its response are investigated. Results of the tuning of the PTMD on a laboratory test floor are presented along with the off-tuning effects. These results indicate that a properly tuned PTMD can significantly reduce the excessive floor vibrations. In addition, when subjected to off-tuning due to variations in the floor live load the PTMD may or may not be able to perform effectively depending on the level of human-structure dynamic interactions. Finally, examples of the PTMD already in use to control excessive floor vibrations are presented.
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Acknowledgments
The research presented in this paper was supported by the National Science Foundation under Grant No. NSFCMS-9978610. This support is gratefully acknowledged. The PTMD was furnished by ESI Engineering, Inc., Minneapolis, Minn. Their support is greatly appreciated.
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Information
Published In
Journal of Performance of Constructed Facilities
Volume 20 • Issue 1 • February 2006
Pages: 64 - 73
Copyright
© 2006 ASCE.
History
Received: Aug 3, 2004
Accepted: Mar 29, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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