Estimation of Cyclic Demand in Metallic Yielding Dampers Installed on Frame Structures
Metadatos
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MDPI
Materia
Passive control Seismic damper Hysteretic dampers
Fecha
2020-06-25Referencia bibliográfica
Morillas, L., & Escolano-Margarit, D. (2020). Estimation of Cyclic Demand in Metallic Yielding Dampers Installed on Frame Structures. Applied Sciences, 10(12), 4364. [doi:10.3390/app10124364]
Patrocinador
FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento B-TEP-306-UGR18; Spanish Ministry of Economy and Competitivity BIA2017 88814-RResumen
The efficacy of hysteretic dampers can be formulated as the number or equivalent inelastic
cycles, or the ratio of normalised dissipated energy to displacement ductility. This parameter is used
in the design of framed structures with supplemental dampers and it is strongly influenced by the
impulsive effects of earthquakes and other structural parameters. This paper presents an estimate of
the cyclic demand of dampers installed in reinforced concrete frames, based on nonlinear time history
analyses. Statistical analyses of the results are used to highlight relevant parameters and calibrate a
predictive formula and upper-bound design values. The collapse pattern of the frames seems to have
no effect on the efficacy of the dampers; thus, the seismological parameters that describe impulsivity
should drive the design of hysteric dampers.