Global existence result for thermoviscoelastic problems with hysteresis |
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Authors: | Laetitia Paoli Adrien Petrov |
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Affiliation: | a Université de Lyon, LaMUSE, 23 rue Paul Michelon, 42023 Saint-Etienne Cedex 02, Franceb Weierstrass Institute, Mohrenstraße 39, 10117 Berlin, Germany |
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Abstract: | We consider viscoelastic solids undergoing thermal expansion and exhibiting hysteresis effects due to plasticity or phase transformations. Within the framework of generalized standard solids, the problem is described in a three-dimensional setting by the momentum equilibrium equation, the flow rule describing the dependence of the stress on the strain history, and the heat transfer equation. Under appropriate regularity assumptions on the data, a local existence result for this thermodynamically consistent system is established, by combining existence results for ordinary differential equations in Banach spaces with a fixed-point argument. Then global estimates are obtained by using both the classical energy estimate and more specific techniques for the heat equation introduced by Boccardo and Gallouët. Finally a global existence result is derived. |
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Keywords: | Existence result Generalized standard materials Heat equation Enthalpy transformation Maximal monotone operators Doubly nonlinear equations Plasticity Shape-memory alloys |
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