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    Vibrations of post-buckled rods: The singular inextensible limit

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    Type
    Article
    Authors
    Neukirch, Sébastien
    Frelat, Joël
    Goriely, Alain cc
    Maurini, Corrado
    KAUST Grant Number
    KUK-C1-013-04
    Date
    2012-01
    Permanent link to this record
    http://hdl.handle.net/10754/600169
    
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    Abstract
    The small-amplitude in-plane vibrations of an elastic rod clamped at both extremities are studied. The rod is modeled as an extensible, shearable, planar Kirchhoff elastic rod under large displacements and rotations, and the vibration frequencies are computed both analytically and numerically as a function of the loading. Of particular interest is the variation of mode frequencies as the load is increased through the buckling threshold. While for some modes there are no qualitative changes in the mode frequencies, other frequencies experience rapid variations after the buckling threshold, the thinner the rod, the more abrupt the variations. Eventually, a mismatch for half of the frequencies at buckling arises between the zero thickness limit of the extensible model and the inextensible model. © 2011 Elsevier Ltd. All rights reserved.
    Citation
    Neukirch S, Frelat J, Goriely A, Maurini C (2012) Vibrations of post-buckled rods: The singular inextensible limit. Journal of Sound and Vibration 331: 704–720. Available: http://dx.doi.org/10.1016/j.jsv.2011.09.021.
    Sponsors
    It is a pleasure to thank Olivier Thomas for discussions on Eq. (25). This publication is based in part upon work supported by Award no. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST) (A.G.). A.G. is a Wolfson/Royal Society Merit Award holder.
    Publisher
    Elsevier BV
    Journal
    Journal of Sound and Vibration
    DOI
    10.1016/j.jsv.2011.09.021
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jsv.2011.09.021
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