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Suche nach „[Bongmba] [Christian]“ hat 5 Publikationen gefunden
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    Maschinenbau und Mechatronik

    Zeitschriftenartikel

    et al., Christian Bongmba

    Ein nichtlineares anisotropes Materialmodell auf der Basis der Hencky-Dehnung und der logarithmischen Rate zur Beschreibung duktiler Schädigung

    Technische Mechanik, vol. 22, no. 3, pp. 205-222

    2002

    Maschinenbau und Mechatronik

    Zeitschriftenartikel

    O. Bruhns, Christian Bongmba

    On the numerical implementation of a finite strain anisotropic damage model based upon the logarithmic rate

    European Journal of Finite Elements, vol. 10, no. 2-3-4, pp. 395-400

    2001

    DOI: 10.1080/12506559.2001.11869258

    Abstract anzeigen

    We present a finite strain anisotropic damage model and show its numerical implementation. The framework of XIAO, BRUHNS & MEYERS [XIA 00] is adopted; i. e. strain and stress measures are, respectively, the logarithmic strain and its work-conjugate stress. Also, a combination of the additive decomposition of the stretching and the multiplicative decomposition of the deformation gradient is used, and the logarithmic rate is used for all rate constitutive laws. To model the change in material symmetry induced by damage, the damage parameter is regarded as an evolving structural tensor. On the irreversible thermodynamics side, it is treated as an internal state variable. Gurson's flow potential is used as a micromechanical basis.

    Maschinenbau und Mechatronik

    Vortrag

    Christian Bongmba

    An anisotropic damage-elastoplastic model based upon the logarithmic rate and the logarithmic strain

    1st International Conference on Lifetime-Oriented Design Concepts, Bochum

    2001

    Maschinenbau und Mechatronik

    Buch (Monographie)

    Christian Bongmba

    Ein finites anisotropes Materialmodell auf der Basis der Hencky-Dehnung und der logarithmischen Rate zur Beschreibung duktiler Schädigung

    Mitteilungen aus dem Institut für Mechanik / Ruhr-Universität Bochum, Bochum, vol. Nr. 127

    2001

    ISBN: 3935892012

    Maschinenbau und Mechatronik

    Vortrag

    Christian Bongmba

    On the Numerical Implementation of a finite strain anisotropic damage model based on the logarithmic strain and the logarithmic rate

    EUROMECH 417, Numerical Modelling in Damage Mechanics, Troyes, Frankreich

    2000