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

F: Maschinenbau und Mechatronik

Zeitschriftenartikel

Christian Bongmba, et al.

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

F: 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.

F: 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

F: 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

Inaugural-Dissertation zur Erlangung der Doktorwürde

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

2001

ISBN: 3935892012

F: 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