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Issue 20, 2014

Soft-solid deformation mechanics at the tip of an embedded needle

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Abstract

Motivated by a recently developed technique for measuring soft materials properties at the tip of an embedded needle [Zimberlin, et al., Soft Matter, 2007, 3, 763], the mechanics of elasticity- and surface tension-governed void growth within a neo-Hookean material is explored. Previous efforts to describe this technique relied on a hybrid spherical void/spherical cap approximation, thus assuming a spatially homogeneous deformation, i.e., no stress concentrations. We find that despite the inhomogeneities in needle-mediated growth, utilization of an areal surface stretch ratio as the deformation parameter yields good agreement between the spherical void and needle geometries.

Graphical abstract: Soft-solid deformation mechanics at the tip of an embedded needle

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Article information


Submitted
21 Oct 2013
Accepted
20 Mar 2014
First published
24 Mar 2014

Soft Matter, 2014,10, 3679-3684
Article type
Paper

Soft-solid deformation mechanics at the tip of an embedded needle

S. B. Hutchens and A. J. Crosby, Soft Matter, 2014, 10, 3679 DOI: 10.1039/C3SM52689E

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