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A nonlinear numerical model for sloped-bottom tuned liquid dampers

✍ Scribed by D. E. Olson; D. A. Reed

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
203 KB
Volume
30
Category
Article
ISSN
0098-8847

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✦ Synopsis

Abstract

Shaking‐table data for a tuned liquid damper with a sloped bottom of 30° with the horizontal are investigated using a non‐linear numerical model previously developed by Yu, Jin‐kyu, Nonlinear characteristics of tuned liquid dampers. Ph.D. Thesis, Department of Civil Engineering, University of Washington, Seattle, WA, 98195 (1997). Stiffness and damping parameters for this model are obtained and compared with those previously derived for box‐shaped tanks. The values for these parameters reflect the softening spring behaviour of the sloped‐bottom system in contrast to the hardening system evident for the box‐shaped TLD. Consequently, the sloped‐bottom tank should be tuned slightly higher than the fundamental structural frequency in order to obtain the most effective damping. Copyright © 2001 John Wiley & Sons, Ltd.

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