Consequences and Achievement of Supplemental Damping for Improved Seismic Performance

by David M. Bergman, Univ of Michigan, United States,
Robert D. Hanson, Univ of Michigan, United States,



Document Type: Proceeding Paper

Part of: Seismic Engineering: Research and Practice

Abstract:

An earthquake resistant design philosophy which relies upon increased stiffness and damping rather than increased strength and ductility has been investigated. The effect of adding supplemental mechanical damping devices to a structure on its elastic and inelastic earthquake response is described in terms of response spectral procedures. Also presented are the experimentally obtained hysteretic characteristics of an added damping and stiffness type mechanical damping device (ADAS) which utilizes cyclic yielding of its steel plate elements as the mode of energy dissipation. Damper properties reported within include the equivalent viscous damping coefficient, average linear elastic stiffness and fatigue resistance.

Subject Headings: Damping | Steel plates | Seismic design | Stiffening | Seismic tests | Load and resistance factor design | Elastic analysis

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