Data di Pubblicazione:
2015
Citazione:
Analysis of a model coupling volume and surface processes in thermoviscoelasticity / E. Bonetti, G. Bonfanti, R. Rossi. - In: DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS. - ISSN 1078-0947. - 35:6(2015 Jun), pp. 2349-2403. [10.3934/dcds.2015.35.2349]
Abstract:
We focus on a highly nonlinear evolutionary PDE system describ- ing volume processes coupled with surfaces processes in thermoviscoelasticity, featuring the quasi-static momentum balance, the equation for the unidirec- tional evolution of an internal variable on the surface, and the equations for the temperature in the bulk domain and the temperature on the surface. A significant example of our system occurs in the modeling for the unidirectional evolution of adhesion between a body and a rigid support, subject to thermaluctuations and in contact with friction. We investigate the related initial-boundary value problem, and in particular the issue of existence of global-in-time solutions, on an abstract level. This allows us to highlight the analytical features of the problem and, at the same time, to exploit the tight coupling between the various equations in order to deduce suitable estimates on (an approximation of) the problem. Our existence result is proved by passing to the limit in a carefully tailored approximate problem, and by extending the obtained local-in-time solution by means of a refined prolongation argument.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Adhesive contact; Global-in-time existence of solutions; Maximal monotone operator techniques; Thermoviscoelasticity; Volume and surface processes; Discrete Mathematics and Combinatorics; Applied Mathematics; Analysis
Elenco autori:
E. Bonetti, G. Bonfanti, R. Rossi
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