Seismic performance assessment of medical equipment using experimentally validated rolling and toppling nonlinear models

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dc.catalogadorjca
dc.contributor.authorGuamán Cabrera, Jaime Wilson
dc.contributor.authorDe La Llera Martín, Juan Carlos
dc.contributor.authorMery Quiroz, Domingo Arturo
dc.date.accessioned2023-07-11T16:11:32Z
dc.date.available2023-07-11T16:11:32Z
dc.date.issued2023
dc.description.abstractDuring the last decades, several hospitals stopped service due to severe seismic damage to nonstructural components and medical equipment. This article investigates the dynamic behavior of medical equipment deployed in a full-scale, five-story building with two different support conditions, base isolated (BI) and fixed to the base (FB). Two nonlinear mathematical models, namely, rolling and toppling, are used to simulate the observed experimental responses using recorded data and the camera projection technique (CPT). CPT generated the possibility of measuring equipment horizontal displacements, slips, rotations, rocking, and toppling responses. The Euler–Lagrange formulation, along with the Stribeck friction model, was used to numerically model the rolling and in-plane rotation behavior of a four-wheel mobile cart (4WMC), which is considered to represent the trajectory of equipment supported on caster wheels. Besides, a simple two-dimensional (2D) rigid block model was used to describe the rocking and toppling behavior of locked and free-standing equipment. It was found that the 4WMC model was sensitive to the platform and wheels’ initial orientation angles, as well as the static and kinetic friction coefficients. As it should be, the toppling model was sensitive to the block dimensions and the intensity of the shaking. It was concluded that both numerical models successfully predicted the equipment rolling, in-plane rotation, rocking, and toppling behavior, as long as neither severe lateral impacts nor significant changes in the equipment mass occur during the motion.
dc.fechaingreso.objetodigital2023-07-11
dc.fuente.origenORCID
dc.identifier.doi10.1177/87552930231180904
dc.identifier.eissn1944-8201
dc.identifier.issn8755-2930
dc.identifier.urihttps://doi.org/10.1177/87552930231180904
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/74165
dc.identifier.wosidWOS:001058111100019
dc.information.autorucEscuela de Ingeniería; De La Llera Martín, Juan Carlos; 0000-0002-9064-0938; 53086
dc.information.autorucEscuela de Ingeniería; Guamán Cabrera, Jaime Wilson; 0000-0002-7243-1534; 1063930
dc.information.autorucEscuela de Ingeniería; Mery Quiroz, Domingo Arturo; 0000-0003-4748-3882; 102382
dc.language.isoen
dc.nota.accesoContenido parcial
dc.revistaEarthquake Spectra
dc.rightsacceso restringido
dc.solicitante3D tracking
dc.subjectMedical equipment
dc.subjectCamera projection
dc.subjectRolling
dc.subjectRocking
dc.subjectToppling
dc.subjectStribeck friction
dc.subjectFour-wheel mobile cart
dc.subjectBase isolation
dc.subject.ddc550
dc.subject.deweyCiencias de la tierraes_ES
dc.subject.ods11 Sustainable cities and communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleSeismic performance assessment of medical equipment using experimentally validated rolling and toppling nonlinear models
dc.typeartículo
sipa.codpersvinculados53086
sipa.codpersvinculados1063930
sipa.codpersvinculados102382
sipa.trazabilidadORCID;2023-07-10
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