A sharp interface model for the propagation of martensitic phase boundaries
Patrick W. Dondl and Kaushik Bhattacharya
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Submission date: 26. Nov. 2008
published in: Archive for rational mechanics and analysis, 197 (2010) 2, p. 599-617
DOI number (of the published article): 10.1007/s00205-009-0286-x
MSC-Numbers: 35A15, 49Q20
Keywords and phrases: calculus of variations, Martensitic Phase Boundaries, Free Boundary Evolution
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A model for the quasistatic evolution of martensitic phase boundaries is presented. The model is essentially the gradient flow of an energy that can contains elastic energy due to the underlying change in crystal structure in the course of the phase transformation and surface energy penalizing the area of the phase boundary. This leads to a free boundary problem with a nonlocal velocity that arises from the coupling to the elasticity equation. We show existence of solutions under a technical convergence condition using an implicit time-discretization.