Abstract
Radial deformations of an infinite medium surrounding a traction-free spherical cavity are considered. The body is composed of an isotropic, incompressible elastic material and is subjected to a uniform pressure at infinity. The possibility of void collapse (i.e. the void radius becoming zero at a finite value of the applied stress) is examined. This does not occur in all materials. The class of materials that do exhibit this phenomenon is determined, and for such materials, an explicit expression for the value of the applied pressure at which collapse occurs is derived. The stability of the deformation and the influence of a finite outer radius are also considered. The results are illustrated for a particular class of power-law materials. In certain respects, the present results for void collapse are complementary to Ball (1982)'s results for cavitation in an incompressible elastic material.
Some brief observations on void collapse in compressible materials are made. The collapse of a void under non-symmetric conditions is also discussed by utilizing a solution obtained by Varley and Cumberbatch (1977, 1980).
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The results reported here were obtained in the course of an investigation supported in part by the U.S. Army Research Office.
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Abeyaratne, R., Hou, HS. Void collapse in an elastic solid. J Elasticity 26, 23–42 (1991). https://doi.org/10.1007/BF00041149
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DOI: https://doi.org/10.1007/BF00041149