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Prof.-Dr.-Ing. Christian Bongmba

Faculty of Mechanical Engineering and Mechatronics

Professors

Professor

C 202

0991/3615-329

Bürozeiten

By appointment

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Lecture
  • Christian Bongmba

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

In: EUROMECH 417, Numerical Modelling in Damage Mechanics

Université de Technologie de Troyes Troyes, Frankreich

  • 02.-04.10.2000 (2000)
Book
  • 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.

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

Ruhr-Universität Bochum Institut für Mechanik Bochum Institut für Mechanik

  • 2001 (2001)
Journal article
  • O. Bruhns
  • Christian Bongmba

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

In: European Journal of Finite Elements vol. 10 pg. 395-400

  • (2001)

DOI: 10.1080/12506559.2001.11869258

show abstract

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.
Lecture
  • Christian Bongmba

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

In: 1st International Conference on Lifetime-Oriented Design Concepts

Ruhr-Universität Bochum Bochum

  • März 2001 (2001)
Journal article
  • Christian Bongmba
  • et al.

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

In: Technische Mechanik vol. 22 pg. 205-222

  • (2002)

core competencies

  • Engineering Mechanics
  • Numerical Simulation with FEM & MBD

Vita

  • Since Winter Semester 2010/2011: Professor at the Faculty of Mechanical Engineering and Mechatronics
  • 2006 - 2010: Team Leader, Wing Global FEM A350XWB, Department of Engineering Structural Analysis, Airbus UK
  • 2002 - 2005 : Stress Engineer, DaimlerChrysler - Mercedes-Benz Technology Center in Sindelfingen
  • 2001 Doctorate with Prof. Dr.-Ing. Otto Timme Bruhns. Topic “A finite anisotropic material model based on the Hencky strain and the logarithmic rate to describe ductile damage”
  • 1996: Dipl.-Ing. Mechanical engineering, Major in Engineering Mechanics, Ruhr University Bochum
  • 1990: Language Course in German as a Foreign Language at the Carl Duisberg Centers
  • 1989: GCE A Level in Government High School Nkambe, Cameroon