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

Simple item page
dc.citation.articleNumber011019
dc.citation.issueNumber1
dc.citation.journalTitleJournal of Vibration and Acoustics
dc.citation.volumeNumber142
dc.contributor.authorShu, Hang
dc.contributor.authorSmith, Scott A.
dc.contributor.authorBrake, Matthew R.W.
dc.contributor.orgTribomechadynamics Laboratory
dc.date.accessioned2021-06-09T20:00:51Z
dc.date.available2021-06-09T20:00:51Z
dc.date.issued2020
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.
dc.description.abstracttherefore, future work is needed to study the shape, location, and material for the design and fabrication of nonlinear vibration absorbers.
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.
dc.identifier.doihttps://doi.org/10.1115/1.4045381
dc.identifier.urihttps://hdl.handle.net/1911/110700
dc.language.isoeng
dc.publisherASME
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by ASME.
dc.subject.keywordbolted joints
dc.subject.keywordnonlinear vibration
dc.subject.keywordadditive manufacturing
dc.subject.keywordvibration absorber
dc.subject.keywordinterface geometries
dc.subject.keyworddamping
dc.titleThe Influence of Additively Manufactured Nonlinearities on the Dynamic Response of Assembled Structures
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpost-print
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
AM_paper_final.pdf
Size:
6.39 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Faculty Publications
Mechanical Engineering Publications