Akademska digitalna zbirka SLovenije - logo
(UL)
  • Computer-aided identification of the yield curve of a sheet metal after onset of necking
    Koc, Pino ; Štok, Boris
    By the computer-aided method of material characterization many complex identification cases, where classic experimental-analytical methods of physical properties identification fail, can be ... successfully solved. Such an example is the standard tensile test of a flat steel sample, where the yield curve cannot be identified after the occurrence of the necking phenomenon. Yet, in deep drawing of metal sheets, strains and stresses beyond the limits derived by classic analytic expressions upon the tensile test measurements areoften met. In order to enable physically objective numerical simulations ofthose processes, reliable material properties data must be provided. To copewith the problem of the extended yield curve identification, a special combined experimentalžnumerical technique has been developed. The technique relies on the comparison between the real material response, measured by the standard tensile test, and the response, obtained from a numerical simulation of the same test under assumption of a prescribed material behaviour. By proper tuning of some characteristic parameters of this tentative material behaviour law, the numerical response can be drawn close to the measured one. For this purpose a special numerical approach, based on mathematical optimization methods is employed.
    Vir: Computational materials science. - ISSN 0927-0256 (Letn. 31, št. 1/2, 2004, str. 155-168)
    Vrsta gradiva - članek, sestavni del
    Leto - 2004
    Jezik - angleški
    COBISS.SI-ID - 7467803

    Povezava(-e):

    http://www.sciencedirect.com/science/journal/09270256

    DOI: 10.1016/j.commatsci.2004.02.004

    Dostop do polnega teksta za člane



vir: Computational materials science. - ISSN 0927-0256 (Letn. 31, št. 1/2, 2004, str. 155-168)

loading ...
loading ...
loading ...

Vnos na polico