Abstract
Engineering structures are generally designed as the assembly of several parts in consideration of manufacture and structural strength, while different connections have great effects on the dynamic characteristics of the whole structure. This article firstly introduces the influence of stiffness and mass distribution on the beam’s modal parameters. Then a beam-like structure consisting of four steel parts connected with bolts is presented and a series of modal testing is performed to estimate the modal parameters under free-free boundary condition. Afterwards connection location and bolt preload are selected as variables for modal testing, and the modal parameters of the beam-like structure with different connection locations and bolt preloads are compared. Finally, the finite element model of the bolted connection is updated based on the data of modal testing. The results indicate that the larger bolt preload increases the stiffness of connections, which consequently changes the modal parameters, while the influence of the bolt preload highly depends on the connection location.
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© 2013 The Society for Experimental Mechanics, Inc.
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Ma, ZS., Liu, L., Zhou, SD., Jiang, D., He, YY. (2013). Effects of Bolted Connection on Beam Structural Modal Parameters. In: Cunha, A. (eds) Topics in Dynamics of Bridges, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6519-5_15
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DOI: https://doi.org/10.1007/978-1-4614-6519-5_15
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Publisher Name: Springer, New York, NY
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Online ISBN: 978-1-4614-6519-5
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