Weighted energy-dissipation functionals for gradient flows

Mielke, Alexander; Stefanelli, Ulisse

ESAIM: Control, Optimisation and Calculus of Variations, Tome 17 (2011) no. 1, pp. 52-85.

We investigate a global-in-time variational approach to abstract evolution by means of the weighted energy-dissipation functionals proposed by Mielke and Ortiz [ESAIM: COCV 14 (2008) 494-516]. In particular, we focus on gradient flows in Hilbert spaces. The main result is the convergence of minimizers and approximate minimizers of these functionals to the unique solution of the gradient flow. Sharp convergence rates are provided and the convergence analysis is combined with time-discretization. Applications of the theory to various classes of parabolic PDE problems are presented. In particular, we focus on two examples of microstructure evolution from [S. Conti and M. Ortiz, J. Mech. Phys. Solids 56 (2008) 1885-1904.].

Classification : 35K55
Mots clés : variational principle, gradient flow, convergence

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