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Solutions to a model with Neumann boundary conditions for phase transitions driven by configurational forces. (English) Zbl 1215.35012
Summary: We study an initial boundary value problem of a model describing the evolution in time of diffusive phase interfaces in solid materials, in which martensitic phase transformations driven by configurational forces take place. The model was proposed earlier by the authors and consists of the partial differential equations of linear elasticity coupled to a nonlinear, degenerate parabolic equation of second order for an order parameter. In a previous paper global existence of weak solutions in one space dimension was proved under Dirichlet boundary conditions for the order parameter. Here we show that global solutions also exist for Neumann boundary conditions. Again, the method of proof is only valid in one space dimension.

##### MSC:
 35A01 Existence problems for PDEs: global existence, local existence, non-existence 35K65 Degenerate parabolic equations
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##### References:
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