Podrobnosti záznamu

Název
    Parallel Solution of Elasticity Problems using Aggregations
Autor
    Kohut, Roman
Konference
    Modelling 2014 (02.06.2014-06.06.2014 : Rožnov pod Radhoštěm, Česká republika)
Jazyk
    anglicky
Typ dokumentu
    abstrakt
Zdrojový dokument - monografie
    Modelling 2014
Strany
    S. 56-56
Poznámky
    Autoři celkem: 1
    Rozsah: 1 s. : P
Předmětová kategorie
    aggregations
    elasticity problems
    parallel solution
Klíčové slovo
    Aggregations
    Elasticity
    Parallel
    Problems
    Solution
    Using
Abstrakt (anglicky)
   The contribution is devoted to a FE solution of elasticity problems. For the solution of the corresponding system of linear equations we use preconditioned CG method with overlapping Schwarz type preconditioners. The efficiency of the preconditioner decreases with an increasing number of subproblems and for avoiding this problem it is necessary to involve a coarse mesh correction. We use the algebraic coarse space created by aggregation. The aggregation used in the contribution is based on the idea that the basis functions for the coarse grid space are given by a linear combination of the basis functions for the fine grid space in the case of fully compatible FE spaces. The corresponding coefficients are given by the function values of the coarse grid basis function in the corresponding fine grid nodes.
   Using these relations between basis functions for the coarse grid and the fine grid spaces we obtain formulae for relations between the coarse matrix elements and the fine matrix elements.
Přispěvatel
    AV ČR Brno, Ústav geoniky
Kód přispěvatele
    AV ČR, ÚG
Zdrojový formát
    U
Datum importu
    24. 10. 2014