Nonconvex minimization related to quadratic double-well energy - approximation by convex problemsenergy – approximation by convex problems

• Autorzy: Naniewicz Z. , Puchała P.
• Języki publikacji: EN

Abstrakty

EN

A double-well energy expressed as a minimum of two quadratic functions, called phase energies, is studied taking into account minimization of the corresponding integral functional. Such integral, as being not sequentially weakly lower semicontinuous, does not admit classical minimizers. To derive the relaxation formula for the infimum, the appropriate minimizing sequence is constructed. It consists of solutions of some approximating convex problems involving characteristic functions related to the phase energies. The weak limit of this sequence and the weak limit of the sequence of solutions of dual problems combined with the weak-star limits of the characteristic functions related to the phase energies allow to establish the final relaxation formula. It is also shown that infimum can be expressed by the Young measure associated with constructed minimizing sequence. An explicit form of Young measure in some regions of the involved domain is calculated.

Słowa kluczowe

EN

nonconvex integrand; minimum of convex functions; duality; parameterized Young measures

• Wydawca: Systems Research Institute, Polish Academy of Sciences
• Czasopismo: Control and Cybernetics
• Rocznik: 2012
• Tom: Vol. 41, no. 3
• Strony: 525--543
• Opis fizyczny: Bibliogr. 34 poz.

Twórcy

autor

Naniewicz Z.

autor

Puchała P.

• Cardinal Stefan Wyszyński University, Faculty of Mathematics and Natural Sciences, Dewajtis 5, 0--815 Warsaw, Poland

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