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  • Estimating the Cowper–Symonds parameters for high-strength steel using DIC combined with integral measures of deviation [Elektronski vir]
    Škrlec, Andrej ...
    Cowper–Symonds parameters were estimated for the complex-phase high-strength steel with a commercial name of SZBS800. The parameter estimation was based on a series of conventional tensile tests and ... unconventional high-strain rate experiments. The parameters were estimated using a reverse engineering approach. LS-Dyna was used for numerical simulations, and the material’s response was modelled using a piece-wise linear plasticity model with a visco-plastic formulation of the Cowper–Symonds material model. A multi-criteria cost function was defined and applied to obtain a response function for the parameters p and C. The cost function was modelled with a response surface, and the optimal parameters were estimated using a real-valued genetic algorithm. The main novelty and innovation of this article is the definition of a cost function that measures a deviation between the deformed geometry of the flat plate-like specimens and the results of the numerical simulations. The results are compared to the relevant literature. A critical evaluation of our results and references is another novelty of this article.
    Vir: Metals [Elektronski vir]. - ISSN 2075-4701 (Vol. 14, iss. 9, [article no.] 992, 2024, str. 1-20)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 206038019

    Povezava(-e):

    https://www.mdpi.com/2075-4701/14/9/992
    Repozitorij Univerze v Ljubljani – RUL
    DOI

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