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Models for dynamic analysis of backup ball bearings of an AMB-system

dc.contributor.authorHalminen, Oskari
dc.contributor.authorFernández-Aceituno, Javier
dc.contributor.authorEscalona, José Luis
dc.contributor.authorSopanen, Jussi
dc.contributor.authorMikkola, Aki
dc.date.accessioned2025-10-07T11:22:30Z
dc.date.available2025-10-07T11:22:30Z
dc.date.issued2017
dc.description.abstractTwo detailed models of backup bearing are introduced for dynamic analysis of the dropdown event of a rotor supported by an active magnetic bearing (AMB). The proposed two-dimensional models of the backup bearings are based on a multibody approach. All parts of the bearing are modeled as rigid bodies with geometrical surfaces and the bodies interact with each other through contact forces. The first model describes a backup bearing without a cage, and the second model describes a backup bearing with a cage. The introduced models, which incorporate a realistic elastic contact model, are compared with previously presented simplified models through parametric study. In order to ensure the durability of backup bearings in challenging applications where ball bearings with an oversized bore are necessary, analysis of the forces affecting the bearing’s cage and balls is required, and the models introduced in this work assist in this task as they enable optimal properties for the bearing’s cage and balls to be found.
dc.identifier.otherhttp://dx.doi.org/10.1016/j.ymssp.2017.03.033
dc.identifier.urihttps://hdl.handle.net/10953/6185
dc.language.isoeng
dc.publisherELSEVIER
dc.relation.ispartofMechanical Systems and Signal Processing [2017]; [95]: [324-344]
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.subjectBackup ball bearings
dc.subjectElastic contact forces
dc.subject.udc3310
dc.titleModels for dynamic analysis of backup ball bearings of an AMB-system
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/acceptedVersion

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