ORALS

Multiscale Modeling of Metals from Atoms to Components Prof. Dr. Dr. h. c. Siegfried Schmauder Institute for Materials Testing, Materials Science and Strength of Materials (IMWF), University of Stuttgart, Pfaffenwaldring 32, D-70569 Stuttgart, Germany siegfried.schmauder@imwf.uni-stuttgart.de In this overview the first successful examples of real multiscaling from atoms to macroscale for different applications of metals will be presented. In this context, multiscale simulation comprises all length scales from atomistics via microme¬cha-nical contributions to macroscopic materials behavior and further up to applications for compo-nents, nowadays called multiscale materials modelling (MMM). A main focus of the presentation will be put on new developments with special emphasis on MD-simulations and other methods involved and how they interact within the present approach. It will be shown that each method is superior on the respective length scale. Furthermore, the parameters which transport the relevant information from one length scale to the next one are decisive for performing physically based multiscale simulations [1]. While in the past, different methods were tried to be combined into one simulation, it is nowadays obvious in many fields of research that the only way to succeed in understanding the mechanical behavior of materials is to apply scale bridging techniques in sequential multiscale simulations to achieve phy¬sically based practically relevant material solutions without adjustment to any experiment. This has opened the door to real virtual material design strategies. In a final step it will be shown that the approach is not limited to metals but can be extended to other material classes and can be also applied for composites [2] as well as to many aspects of material problems in modern technical applications where the different disciplines meet, from physics to materials science and further on to en¬gineering applications. In the second part of the presentation, emphasis will be put on the problem of fatigue of metals where multiscale materials modeling can answer a number of questions such as the influence of the lattice type or the relevance of mate¬ri¬als properties.

References:
References
[1] S. Schmauder, I. Schäfer (Eds.) 2016, Multiscale Materials Modelling – Approaches to Full Multiscaling, Walter de Gruyter GmbH, Berlin/Boston, 326 p.
[2] S. Schmauder, L. Mishnaevsky (Eds.) 2008, Micromechanics and Nanosimulation of Metals and Composites – Advanced Methods and Theoretical Concepts, Springer, Berlin/Heidelberg, 420 p.