Issue 20, 2014

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

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

Supplementary files

Article information

Article type
Paper
Submitted
21 Oct 2013
Accepted
20 Mar 2014
First published
24 Mar 2014

Soft Matter, 2014,10, 3679-3684

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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