Regensburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
BP: Fachverband Biologische Physik
BP 58: Cytoskeletal Filaments
BP 58.11: Vortrag
Donnerstag, 10. März 2016, 12:45–13:00, H44
Force distributions in disordered fiber networks — •Knut M. Heidemann1, Abhinav Sharma2, Florian Rehfeldt2, Christoph F. Schmidt2, and Max Wardetzky1 — 1Institut für Numerische und Angewandte Mathematik, Georg-August-Universität, Göttingen, Germany — 2Drittes Physikalisches Institut, Georg-August-Universität, Göttingen, Germany
Disordered fiber networks determine the mechanical response of many materials in nature. Due to the filamentous character of these networks, the strain field, and hence the force distributions, can be highly inhomogeneous. Large local stresses can result in an increased susceptibility for local rearrangements due to rupture or unbinding events.
In our study, we introduce a quantitative measure to characterize the emergence of highly stressed one-dimensional paths, so-called force chains, in three-dimensional nonlinear fiber networks. Furthermore, we provide an analytical approach, based on graph theory, that quantitatively describes the force distributions in one-dimensional periodic spring networks. Our analytical results are in excellent agreement with our numerical simulations.