Dresden 2017 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 44: Topical session: Interface-Controlled Microstructures: Mechanical Properties and Mechano-Chemical Coupling - Nano-porous materials

MM 44.3: Vortrag

Mittwoch, 22. März 2017, 12:15–12:30, IFW B

Topological changes in coarsening networks — •Dana Zöllner1 and Paulo R. Rios21Institute of Structural Physics, Technical University Dresden, Dresden, Germany — 2Escola de Engenharia Industrial Metalúrgica, Universidade Federal Fluminense, Volta Redonda, Brasil

The topology of polygonal networks in materials like grain and foam microstructures has been a topic of scientific interest for decades - not only for mathematicians but also for materials scientists due to their imfortance for materials properties. Such networks consist in two dimensions of edges and vertices. As a result, a certain number of edges and likewise vertices surround a polygonal area, which forms a cell or grain.

In the present work, we show what kind of topological changes occur in such two-dimensional networks. To that aim, computer simulations of ideal coarsening have been carried out for different initial networks and at different coarsening stages. We will follow the temporal development of topological changes as well as the trajectories of individual cells.

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