On the Characterization of Nonlinearities in Assembled Structures

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dc.citation.articleNumber051105en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitleJournal of Vibration and Acousticsen_US
dc.citation.volumeNumber142en_US
dc.contributor.authorSmith, Scott A.en_US
dc.contributor.authorBrake, Matthew R.W.en_US
dc.contributor.authorSchwingshackl, Christoph W.en_US
dc.date.accessioned2020-12-11T20:22:01Zen_US
dc.date.available2020-12-11T20:22:01Zen_US
dc.date.issued2020en_US
dc.description.abstractThis work refines a recently formalized methodology proposed by D.J. Ewins consisting of ten steps for model validation of nonlinear structures. This work details, through a series of experimental studies, that many standard test setup assumptions that are made when performing dynamic testing are invalid and need to be evaluated for each structure. The invalidation of the standard assumptions is due to the presence of nonlinearities, both known and unrecognized in the system. Complicating measurements, many nonlinearities are currently characterized as constant properties instead of variables that exhibit dependency on system hysteresis and actuation amplitude. This study reviews current methods for characterizing nonlinearities and outlines gaps in the approaches. A brief update to the CONCERTO method, based on the accelerance of a system, is derived for characterizing a system’s nonlinearities. Finally, this study ends with an updated methodology for model validation and the ramifications for modeling assemblies with nonlinearities are discussed.en_US
dc.identifier.citationSmith, Scott A., Brake, Matthew R.W. and Schwingshackl, Christoph W.. "On the Characterization of Nonlinearities in Assembled Structures." <i>Journal of Vibration and Acoustics,</i> 142, no. 5 (2020) ASME: https://doi.org/10.1115/1.4046956.en_US
dc.identifier.doihttps://doi.org/10.1115/1.4046956en_US
dc.identifier.urihttps://hdl.handle.net/1911/109676en_US
dc.language.isoengen_US
dc.publisherASMEen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by ASME.en_US
dc.subject.keywordbolted jointsen_US
dc.subject.keywordnonlinear vibrationen_US
dc.subject.keywordexperimental setupen_US
dc.subject.keywordmeasurement effectsen_US
dc.subject.keywordtesting guidelinesen_US
dc.titleOn the Characterization of Nonlinearities in Assembled Structuresen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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