The Influence of Additively Manufactured Nonlinearities on the Dynamic Response of Assembled Structures

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dc.citation.articleNumber011019en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleJournal of Vibration and Acousticsen_US
dc.citation.volumeNumber142en_US
dc.contributor.authorShu, Hangen_US
dc.contributor.authorSmith, Scott A.en_US
dc.contributor.authorBrake, Matthew R.W.en_US
dc.contributor.orgTribomechadynamics Laboratoryen_US
dc.date.accessioned2021-06-09T20:00:51Zen_US
dc.date.available2021-06-09T20:00:51Zen_US
dc.date.issued2020en_US
dc.description.abstractStructural dynamic techniques have been proven accurate at predicting the vibrations of single parts (i.e., monolithic specimens), which are widely used in industrial applications. However, vibration analysis of such assemblies often exhibits high variability or nonrepeatability due to jointed interfaces. Inspired by advances in additive manufacturing (AM) and nonlinear vibration absorber theory, this research seeks to redesign jointed structures in an attempt to reduce the nonlinear effects introduced by the jointed interfaces. First, the nonlinear dynamics of a conventionally manufactured beam and an AM beam are measured in both a traditional (flat) lap joint assembly and also a “linearized” lap joint configuration (termed the small pad). Second, the internal structure of the AM beam is varied by printing specimens with internal vibration absorbers. With the two interface geometries studied in this experiment, the flat interface is found to be predominantly nonlinear, and introducing a vibration absorber fails to reduce the nonlinearities from the jointed interface. The small-pad responses are relatively linear in the range of excitation used in the analysis, and the nonlinear effects are further reduced with the presence of a center vibration absorber. Overall, the energy dissipation at the interface is highly dependent on the design of the contact interface and the internal vibration absorber. Adding a nonlinear vibration absorber alone is insufficient to negate the interfacial nonlinearity from the assembly|| therefore, future work is needed to study the shape, location, and material for the design and fabrication of nonlinear vibration absorbers.en_US
dc.description.abstracttherefore, future work is needed to study the shape, location, and material for the design and fabrication of nonlinear vibration absorbers.en_US
dc.identifier.citationShu, Hang, Smith, Scott A. and Brake, Matthew R.W.. "The Influence of Additively Manufactured Nonlinearities on the Dynamic Response of Assembled Structures." <i>Journal of Vibration and Acoustics,</i> 142, no. 1 (2020) ASME: https://doi.org/10.1115/1.4045381.en_US
dc.identifier.doihttps://doi.org/10.1115/1.4045381en_US
dc.identifier.urihttps://hdl.handle.net/1911/110700en_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.keywordadditive manufacturingen_US
dc.subject.keywordvibration absorberen_US
dc.subject.keywordinterface geometriesen_US
dc.subject.keyworddampingen_US
dc.titleThe Influence of Additively Manufactured Nonlinearities on the Dynamic Response of Assembled Structuresen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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