Surface energies arising in microscopic modeling of martensitic transformations

Georgy Kitavtsev, Stephan Luckhaus, Angkana Rueland

Research output: Contribution to journalArticle (Academic Journal)peer-review

5 Citations (Scopus)
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Abstract

In this paper we construct and analyze a two-well Hamiltonian on a 2D atomic lattice. The two wells of the Hamiltonian are prescribed by two rank-one connected martensitic twins, respectively. By constraining the deformed configurations to special 1D atomic chains with position-dependent elongation vectors for the vertical direction, we show that the structure of ground states under appropriate boundary conditions is close to the macroscopically expected twinned configurations with additional boundary layers localized near the twinning interfaces. In addition, we proceed to a continuum limit, show asymptotic piecewise rigidity of minimizing sequences and rigorously derive the corresponding limiting form of the surface energy.
Original languageEnglish
Article number647
JournalMathematical Models and Methods in Applied Sciences
Volume25
Issue number4
Early online date20 Nov 2014
DOIs
Publication statusPublished - Apr 2015

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