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A sharp-interface model describing static equilibrium configurations of shapemory alloys by means of interfacial polyconvex energy density introduced by\v{S}ilhav\'y in 2010 and extended to a quasistatic situation by Kn\"upfer andKru\v{z}\'ik in 2016 is computationally tested. Elastic properties of variantsof martensite and the austenite are described by polyconvex energy densityfunctions. Volume fractions of particular variants are modeled by a map ofbounded variation. Additionally, energy stored in martensite-martensite andaustenite-martensite interfaces is measured by an interface-polyconvexfunction. It is assumed that transformations between material variants areaccompanied by energy dissipation which, in our case, is positively andone-homogeneous giving rise to a rate-independent model. Varioustwo-dimensional computational examples are presented and the used computer codeis made available for downloads.

Interfacial polyconvex energy-enhanced evolutionary model for shape memory alloys