We congratulate Sanjeev Koirala for his PhD

14 August 2024

Sanjeev Koirala, a research assistant at our institute (Structural Mechanics), successfully defended his PhD thesis on August 14, 2024. We congratulate him most sincerely!

The title of his PhD thesis is:

 

"A continuum damage model for anisotropic ductile metals based on experiments and numerical simulations"

 

Univ.-Prof. Dr.-Ing. habil. Michael Brünig, (Universität der Bundeswehr, München), Univ.-Prof. Dr.-Ing. Dr. h.c.mult. Holm Altenbach (Otto-von-Guericke-University Magdeburg) and Univ.-Prof. Dr.-Ing. habil. Jörg Schröder (University of Duisburg-Essen) acted as reviewers for this doctoral thesis.


In recent years, key research areas have focused on material modeling, with a particular emphasis on damage modeling. Special challenges arise in capturing the directional dependence of mechanical response behavior and in validating the models under multiaxial loading.

Mr. Koirala's doctoral thesis thematically falls within the aforementioned area of ​​applied solid mechanics. His primary goal is to extend the thermodynamically consistent anisotropic continuum damage model proposed by Brünig (2001) to include the contribution of plastic anisotropy. Aluminum alloy sheets serve as the basis for the experiments, which are conducted on both uniaxially and biaxially loaded specimens, as well as under different loading directions and conditions. The Hoffmann yield criterion is used to account for the plastic deformations in the model.