Multiphysics behavior of a magneto-rheological damper and experimental validation

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dc.catalogadoryvc
dc.contributor.authorSternberg Cunchillos Alan Phillip
dc.contributor.authorZemp Rene
dc.contributor.authorDe La Llera Martin Juan Carlos
dc.contributor.otherPontificia Universidad Católica de Chile, National Research Center for Integrated Natural Disaster Management
dc.date.accessioned2020-10-02T01:25:36Z
dc.date.available2020-10-02T01:25:36Z
dc.date.issued2014
dc.description.abstractThis investigation deals with the design, manufacturing, and testing of a large-capacity MR damper prototype. The MR damper uses external coils that magnetize the MR-fluid as it moves out of the main cylinder through an external cylindrical gap. In its design, multi-physics numerical simulations are used to better understand its force-velocity constitutive behavior, and its eventual use in conjunction with tuned mass dampers for vibration reduction of high-rise buildings. Multi-physics finite element models are used to investigate the coupled magnetic and fluid-dynamic behavior of these dampers and thus facilitate the proof-of-concept testing of several new designs. In these models, the magnetic field and the dynamic behavior of the fluid are represented through the well-known Maxwell and Navier-Stokes equations. Both fields are coupled through the viscosity of the magneto-rheological fluid used, which in turn depends on the magnetic field strength. Some parameters of the numerical model are adjusted using cyclic and hybrid testing results on a 15 ton MR damper with internal coils. Numerical and experimental results for the 15 ton MR damper showed very good agreement, which supports the use of the proposed cascade magnetic-fluid model. The construction of the 97 ton MR damper involved several technical challenges, such as the use of a bimetallic cylinder for the external coils to confine the magnetic field within a predefined magnetic circuit. As it should be expected, test results of the manufactured MR damper show that the damping force increases with the applied current intensity. However, a larger discrepancy between the predicted and measured force in the large damper is observed, which is studied and discussed further herein. (C) 2014 Elsevier Ltd. All rights reserved.
dc.description.funderCONICYT/FONDAP/15110017
dc.fechaingreso.objetodigital2020-10-02
dc.format.extent12 páginas
dc.fuente.origenConveris
dc.identifier.doi10.1016/j.engstruct.2014.03.016
dc.identifier.issn0141-0296
dc.identifier.urihttps://doi.org/10.1016/j.engstruct.2014.03.016
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/46866
dc.information.autorucEscuela de Ingeniería; Sternberg Cunchillos Alan Phillip; S/I; 141074
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.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final205
dc.pagina.inicio194
dc.revistaEngineering Structureses_ES
dc.rightsacceso restringido
dc.rightsacceso restringido
dc.subjectMagneto-rheological damperes_ES
dc.subjectNumerical modeles_ES
dc.subjectMagneto-rheological fluides_ES
dc.subjectEnergy dissipation deviceses_ES
dc.subjectSemi-active damperses_ES
dc.subjectSeismic responsees_ES
dc.subjectHigh-rise buildingses_ES
dc.subject.ddc551.22
dc.subject.deweyIngenieríaes_ES
dc.titleMultiphysics behavior of a magneto-rheological damper and experimental validationes_ES
dc.typeartículo
dc.volumen69
sipa.codpersvinculados53086
sipa.codpersvinculados141074
sipa.codpersvinculados165664
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