Weak solutions for contact models involving a class of generalized materials

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Weak solutions for contact models involving a class of generalized materials

Matei, Andaluzia

Nonlinear analysis: real world applications, August 2023, 2023-08-00, Volume: 72

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We consider a contact model for a class of generalized materials whose behaviour is described by means of a bipotential. Using the theory of the bipotentials we deliver a weak formulation consisting of a system of three variational inequalities. The unknown is a triple having as components the displacement field, the Cauchy stress tensor and a Lagrange multiplier related to the friction force on the frictional contact zone. We investigate the existence of the weak solutions by using a fixed point theorem for set-valued mappings and a minimization technique.

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