Modelling & Simulation


Dual-Phase Steels – From Micro to Macro Properties (EXASTEEL-2)

Axel Klawonn, Universität zu Köln, Köln, Germany
Daniel Balzani, TU Dresden, Dresden, Germany
Martin Lanser, Universität zu Köln, Köln, Germany
Oliver Rheinbach, TU Bergakademie Freiberg, Freiberg, Germany
Jörg Schröder, University of Duisburg-Essen, Essen, Germany
Gerhard Wellein, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
Olaf Schenk, Università della Svizzera italiana, Lugano, Italy

In the project Dual-Phase Steels – From Micro to Macro Properties (EXASTEEL-2), which is part of the DFG Priority Programme 1648 SPPEXA – Software for Exascale Computing, we are concerned with the development of highly efficient and scalable software and algorithms allowing for predictive virtual material testing of modern dual-phase steels. The macroscopic behavior of dual phase steels is governed by its structure on the microscale. To obtain a realistic model and to be able to predict material failure initiated at the microscopic level, crystal plasticity formulations have to be incorporated at the microscale, phenomenologically resolving an additional scale. The relevant phenomena, responsible for the properties of these steel materials, occur at a scale 104 to 106 times smaller than the macroscale. Virtual material testing of DP steel models including crystal plasticity at the microscale will be only possible by combining inherently parallel computational homogenization methods as FE² with highly parallel scalable nonlinear solver algorithms and carefully assisted performance engineering.

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