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Identification of some nonsmooth evolution systems with illustration on adhesive contacts at small strains

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    0482050 - ÚT 2018 RIV GB eng J - Článek v odborném periodiku
    Adam, Lukáš - Outrata, Jiří - Roubíček, Tomáš
    Identification of some nonsmooth evolution systems with illustration on adhesive contacts at small strains.
    Optimization. Roč. 66, č. 12 (2017), s. 2025-2049. ISSN 0233-1934. E-ISSN 1029-4945
    Grant CEP: GA ČR GAP201/10/0357; GA ČR GA14-15264S
    Institucionální podpora: RVO:61388998 ; RVO:67985556
    Klíčová slova: rate-independent systems * optimal control * identification
    Obor OECD: Pure mathematics; Pure mathematics (UTIA-B)
    Impakt faktor: 1.170, rok: 2017
    http://www.tandfonline.com/doi/abs/10.1080/02331934.2015.1111364

    A class of evolution quasi-static systems which leads, after a suitable time discretization, to recursive non-linear programs, is considered and optimal control or identification problems governed by such systems are investigated. The resulting problem is an evolutionary Mathematical Programs with Equilibrium Constraints. A subgradient information of the (in general nonsmooth) composite objective function is evaluated and the problem is solved by the implicit programming approach. The abstract theory is illustrated on an identification problem governed by delamination of a unilateral adhesive contact of elastic
    bodies discretized by finite-element method in space and a semiimplicit formula in time. Being motivated by practical tasks, an identification
    problem of the fracture toughness and of the elasticity moduli of the adhesive is computationally implemented and tested numerically on a two-dimensional example. Other applications including frictional contacts or bulk damage, plasticity or phase transformations are outlined.
    Trvalý link: http://hdl.handle.net/11104/0278090

     
     
Počet záznamů: 1