Experimental analysis of large capacity MR dampers with short- and long-stroke

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dc.catalogadoryvc
dc.contributor.authorZemp Rene
dc.contributor.authorDe La Llera Martin Juan Carlos
dc.contributor.authorWeber, Félix
dc.date.accessioned2020-10-02T00:53:44Z
dc.date.available2020-10-02T00:53:44Z
dc.date.issued2014
dc.description.abstractThe purpose of this article is to study and characterize experimentally two magneto-rheological dampers with short- and long-stroke, denoted hereafter as MRD-S and MRD-L. The latter was designed to improve the Earthquake performance of a 21-story reinforced concrete building equipped with two 160 ton tuned pendular masses. The MRD-L has a nominal force capacity of 300 kN and a stroke of ±1 m; the MRD-S has a nominal force capacity of 150 kN, and a stroke of ±0.1 m. The MRD-S was tested with two different magneto-rheological and one viscous fluid. Due to the presence of Eddy currents, both dampers show a time lag between current intensity and damper force as the magnetization on the damper changes in time. Experimental results from the MRD-L show a force drop off behavior. A decrease in active-mode forces due to temperature increase is also analyzed for the MRD-S and the different fluids. Moreover, the observed increase in internal damper pressure due to energy dissipation is evaluated for the different fluids in both dampers. An analytical model to predict internal pressure increase in the damper is proposed that includes as a parameter the concentration of magnetic particles inside the fluid. Analytical dynamic pressure results are validated using the experimental tests. Finally, an extended Bingham fluid model, which considers compressibility of the fluid, is also proposed and validated using damper tests.
dc.fechaingreso.objetodigital2020-10-02
dc.format.extent16 páginas
dc.fuente.origenConveris
dc.identifier.doi10.1088/0964-1726/23/12/125028
dc.identifier.issn0964-1726
dc.identifier.issn1361-665X
dc.identifier.urihttps://doi.org/10.1088/0964-1726/23/12/125028
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/46625
dc.information.autorucEscuela de Ingeniería; Zemp Rene; S/I; 165664
dc.information.autorucEscuela de Ingeniería; De La Llera Martin Juan Carlos; 0000-0002-9064-0938; 53086
dc.issue.numero12
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final16
dc.pagina.inicio1
dc.revistaSmart Materials and Structureses_ES
dc.rightsacceso restringido
dc.subject.ddc551.22
dc.subject.deweyCiencias de la tierraes_ES
dc.titleExperimental analysis of large capacity MR dampers with short- and long-strokees_ES
dc.typeartículo
dc.volumen23
sipa.codpersvinculados53086
sipa.codpersvinculados165664
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