DBPapers
DOI: 10.5593/SGEM2015/B13/S5.110

EVALUATION OF SEISMIC ENERGY IN STRUCTURES USING PASSIVE FLUID DAMPERS

S.G. Luca, C. Pastia , M. Budescu , I.B. Teodoru , F.Bejan
Friday 7 August 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-33-9 / ISSN 1314-2704, June 18-24, 2015, Book1 Vol. 3, 847-854 pp

ABSTRACT
Passive fluid viscous dampers have been implemented in civil engineering to improve the seismic response of structures. In seismic design, the input energy of an earthquake is typically dissipated through hysteretic behaviour of structural members, which allows the structure to undergo inelastic deformations without compromising the stability of the structure. The energy dissipation demand on principal members of the structure can be reduced by transferring this energy dissipation demand to the passive fluid dampers. A common mathematical model for describing the linear or nonlinear behavior of viscous fluid dampers in terms of force-velocity curves is presented. The main objective of this paper is, therefore, to present numerical simulations of a single degree of freedom (SDOF) structure to seismic actions in order to assess the performance of the structures protected with such devices. The principal reason to use supplemental fluid dampers is to reduce the input energy, the kinetic plus strain energy and the energy dissipated by the main members of the structure, this way improving seismic protection of structures.

Keywords: Passive Fluid Damper, Energy Dissipation, Vibration Control, Earthquake Engineering.