Confined Metal Plasticity - Small Scale Modeling and Numerically Efficient Implementation


The modeling of small scale plasticity is a research field which has grown to a significant field during the last decades. It has been observed in many micro-scale experiments that the applicability of conventional plasticity theories is strongly limited in micromechanical applications. Specifically, the actual strength of the micro specimens is larger than the one predicted, if macroscopic material parameters are used. This size effect led to the development of a huge range of new, generalized plasticity theories with internal length scales, being able to account for the experimentally observed size effect. The objective of this project is the further development of efficient and robust computational mixed finite element methods for gradient extended microscale plasticity theories and their verification by analytical solutions as well as discrete methods.