Normal contact between an elastoplastic medium and a rigid sphere: Experimental and computational observations
Abstract
This work presents an experimental and numerical investigation on the normal contact between a rigid sphere and a plane one, whose mechanical behaviour has been assumed to be elastoplastic. The stresses in the region of contact have been accessed by means of photoelastic visualization. The evolution of the stress bulbs below the point of contact has been evaluated numerically and a comparison with experimental observations has been performed. The results indicate that a tridimentional elastoplastic model can capture the main features observed in the physical experiments. This academic exercise emphasizes the potential of the finite element method on the solution of deformation problems, considering different constitutive models; it also shows the importance of mathematical and computational modelling based on continuous approaches.Downloads
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Laboratorio de Ingeniería Civil de la Universidad Militar Nueva GranadaReferences
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