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Faculty of Civil and Geodetic Engineering, Ljubljana (FGGLJ)
  • A priori constraint elimination
    Krajnc, Aleš ; Beg, Darko
    The problem of steel frames optimal design, when it is written in mathematical programming form, gives a moderate number of unknowns and a huge number of constraints. A typical frame has about 50 ... unknowns and 20000 constraints. The large number of constraints, which are complex functions of many parameters, represents a problem for most non-linear programming solvers. In order to reduce the number of constraints, we developed a method, which eliminates a large portion of constraints without their costly evaluation. The method is based on the problem specific constraints organisation, where the constraints are organized into sets. It turns out that we can remove individual constraints from a set by simply comparing constraint parameters
    Source: Zeitschrift für angewandte Mathematik und Mechanik = Journal of applied mathematics and mechanics. - ISSN 0044-2267 (Vol. 81, suppl. 3, 2001, str. 679-680)
    Type of material - article, component part
    Publish date - 2001
    Language - english
    COBISS.SI-ID - 1507681

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