Preprint 73/1999

Branched microstructures: scaling and asymptotic self-similarity

Sergio Conti

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Submission date: 22. Dec. 1999
Pages: 29
published in: Communications on pure and applied mathematics, 53 (2000) 11, p. 1448-1474 
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We address some properties of a scalar 2D model which has been proposed to describe microstructure in martensitic phase transformations, consisting in minimizing the bulk energy
where tex2html_wrap_inline13 a.e. and tex2html_wrap_inline15. Kohn and Müller [R. V. Kohn and S. Müller, Comm. Pure and Appl. Math. 47, 405 (1994)] proved the existence of a minimizer for tex2html_wrap_inline17, and obtained bounds on the total energy which suggested self-similarity of the minimizer. Building upon their work, we derive a local upper bound on the energy and on the minimizer itself, and show that the minimizer u is asymptotically self-similar, in the sense that the sequence
(tex2html_wrap_inline23) has a strongly converging subsequence in tex2html_wrap_inline25.

24.11.2021, 02:10