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Elastic pulse generation by tractions applied to a spherical cavity

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Abstract

The generation of an elastic pulse in an infinite homogeneous, isotropic elastic solid by the application of axisymmetrical time-dependent loading to the surface of a spherical cavity is considered. Formal Laplace transformed general solutions are obtained, before studies are made of cases in which tractions are applied only to a cap of the cavity wall. The patterns of wavefronts which develop in these cases can consist of dilatational and rotational direct, edge and diffracted, and head wavefronts. Approximations to the field near the wavefronts are obtained and discussed.

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Tupholme, G.E. Elastic pulse generation by tractions applied to a spherical cavity. Appl. Sci. Res. 40, 299–325 (1983). https://doi.org/10.1007/BF00383037

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