The Mathematical Institute, University of Oxford, Eprints Archive

The ‘Sticky Elastica’: Delamination blisters beyond small

Wagner, T. J. W. and Vella, D. (2012) The ‘Sticky Elastica’: Delamination blisters beyond small
Soft Matter .


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We consider the form of an elastic loop adhered to a rigid substrate: the ‘sticky Elastica’. In contrast to previous studies of the shape of delamination ‘blisters’, the theory developed accounts for deflections with large slope (i.e. geometrically nonlinear). Starting from the classical Euler Elastica we provide numerical results for the dimensions of such blisters for a variety of end-end confinements and develop asymptotic expressions that reproduce these results well up to the point of self-contact. Interestingly, we find that the width of such blisters does not grow monotonically with increased confinement. Our theoretical predictions are confirmed by simple desktop experiments and suggest a new method for the measurement of the elastocapillary length for deformations that cannot be considered small.

Item Type:Article
Subjects:D - G > General
Research Groups:Oxford Centre for Collaborative Applied Mathematics
ID Code:1545
Deposited By: Peter Hudston
Deposited On:05 Jul 2012 07:53
Last Modified:29 May 2015 19:14

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