Experimental investigation of mode veering phenomena in a bolted connection
Dashty Samal Rashid, Francesco Giorgio Serchi, Naoki Hosoya, David Garcia Cava
Abstract. Mode veering phenomena, sometimes accompanied by mode localization, refers to the sudden and abrupt changes in the trajectories of eigenvalues in a system, often caused by small variations in system parameters or boundary conditions. In this paper, mode veering phenomena is studied with the focus on the dynamics of bolt connection geometry. A combination of experimental and analytical modeling is used to identify and validate the conditions under which veering occurs in bolted connections. The parameter varied here is the length ratio of the shank and protruding end of a bolt, which serves to characterize the bolt’s geometry. The experimental results demonstrate that the observed behavior corresponds well with the analytical model, indicating the presence of localized modes. In particular, the mode shape variation showed consistency with the model’s predictions. The implications of these findings with respect to the agreement between the model and observed experimental results are discussed.
Keywords
Veering Phenomena, Bolted Connections, Modal Analysis, Structural Dynamics, Engineering Mechanics
Published online 3/25/2025, 11 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Dashty Samal Rashid, Francesco Giorgio Serchi, Naoki Hosoya, David Garcia Cava, Experimental investigation of mode veering phenomena in a bolted connection, Materials Research Proceedings, Vol. 50, pp 201-211, 2025
DOI: https://doi.org/10.21741/9781644903513-24
The article was published as article 24 of the book Structural Health Monitoring
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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