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    The magneto-elastica: from self-buckling to self-assembly

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    Type
    Article
    Authors
    Vella, D.
    du Pontavice, E.
    Hall, C. L.
    Goriely, A.
    KAUST Grant Number
    KUK-C1-013-04
    Date
    2013-12-04
    Permanent link to this record
    http://hdl.handle.net/10754/599933
    
    Metadata
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    Abstract
    Spherical neodymium-iron-boron magnets are permanent magnets that can be assembled into a variety of structures owing to their high magnetic strength. A one-dimensional chain of these magnets responds to mechanical loadings in a manner reminiscent of an elastic rod. We investigate the macroscopic mechanical properties of assemblies of ferromagnetic spheres by considering chains, rings and chiral cylinders of magnets. Based on energy estimates and simple experiments, we introduce an effective magnetic bending stiffness for a chain of magnets and show that, used in conjunction with classic results for elastic rods, it provides excellent estimates for the buckling and vibration dynamics of magnetic chains. We then use this estimate to understand the dynamic self-assembly of a cylinder from an initially straight chain of magnets.
    Citation
    Vella D, du Pontavice E, Hall CL, Goriely A (2013) The magneto-elastica: from self-buckling to self-assembly. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470: 20130609–20130609. Available: http://dx.doi.org/10.1098/rspa.2013.0609.
    Sponsors
    This publication is based in part upon work supported by award no. KUK-C1-013-04, made by the King Abdullah University of Science and Technology (KAUST). A. G. is a Wolfson/Royal Society Merit Award holder and acknowledges support from a Reintegration grant under EC Framework VII. A. G. and C. H. acknowledge support from the EPSRC through grant no. EP/I017070/1.
    Publisher
    The Royal Society
    Journal
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
    ISSN
    1364-5021
    1471-2946
    DOI
    10.1098/rspa.2013.0609
    PubMed ID
    24511257
    PubMed Central ID
    PMC3896066
    ae974a485f413a2113503eed53cd6c53
    10.1098/rspa.2013.0609
    Scopus Count
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