Incollection,

High stress intensities in focussing zones of waves

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Local Effects in the Analysis of Structures., Elsevier, Amsterdam, (1985)
DOI: 10.1016/B978-0-444-42520-1.50015-3

Abstract

The propagation of mechanical waves in plates of isotropic elastic material is investigated. After a short introduction to the understanding of focussing of stress waves in a plate with a curved boundary, the method of characteristics is applied to a plate of hyperelastic material. Using this method the propagation of acceleration waves is discussed. Based on this a numerical difference scheme is developed for solving initial-boundary-value problems and applied to two examples: propagation of a point disturbance in a homogeneously finitely strained non-linear elastic plate and geometrical focussing in a linearly elastic plate.

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