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Proceedings Paper

Viscous and metallic dampers in a building structure subjected to varying levels of ground motion
Author(s): Mark G. Vilcheck; Wenshen Pong
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Paper Abstract

Supplemental energy dissipation devices have been proven in applications worldwide to be an effective means of mitigating seismic hazard. This work offers a comparison of viscous fluid dampers and metallic yielding dampers in a Steel Moment Frame. A computer-simulated building frame model, with and without supplemental energy dissipation devices, is subjected to three levels of ground motion. The simulated building is then fitted with four combinations of metallic yielding dampers, with varying stiffness ratio, and viscous fluid dampers, with 10%, 20%, and 30% of critical damping. One additional combination of dampers is examined with varying ductility ratio to demonstrate its effect on the metallic dampers. Comparison and analysis of the simulation results reveals that the viscous fluid dampers are more flexible in their suitability for a wider range of applications, but that metallic dampers are perhaps more suitable for situations involving large seismic input requiring early energy dissipation. The comparison of the response of the frame with different values of ductility ratio with respect to the metallic dampers reveals that it is the stiffness ratio rather than the ductility ratio that has a greater effect on the performance of the devices under seismic loading.

Paper Details

Date Published: 2 July 2001
PDF: 11 pages
Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432701
Show Author Affiliations
Mark G. Vilcheck, San Francisco State Univ. (United States)
Wenshen Pong, San Francisco State Univ. (United States)

Published in SPIE Proceedings Vol. 4331:
Smart Structures and Materials 2001: Damping and Isolation
Daniel J. Inman, Editor(s)

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