Avalanches, loading and finite size effects in 2D amorphous plasticity: Results from a finite element model
Sandfeld S, Budrikis Z, Zapperi S, Fernandez Castellanos D (2015)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2015
Journal
Publisher: Institute of Physics: Hybrid Open Access
Book Volume: 2015
Article Number: P02011
Journal Issue: 2
DOI: 10.1088/1742-5468/2015/02/P02011
Abstract
Crystalline plasticity is strongly interlinked with dislocation mechanics and nowadays is relatively well understood. Concepts and physical models of plastic deformation in amorphous materials on the other hand - where the concept of linear lattice defects is not applicable - still are lagging behind. We introduce an eigenstrain-based finite element lattice model for simulations of shear band formation and strain avalanches. Our model allows us to study the influence of surfaces and finite size effects on the statistics of avalanches. We find that even with relatively complex loading conditions and open boundary conditions, critical exponents describing avalanche statistics are unchanged, which validates the use of simpler scalar lattice-based models to study these phenomena.
Authors with CRIS profile
Stefan Sandfeld
Lehrstuhl für Werkstoffsimulation
David Fernandez Castellanos
Lehrstuhl für Werkstoffsimulation
Involved external institutions
Italy (IT)How to cite
APA:
Sandfeld, S., Budrikis, Z., Zapperi, S., & Fernandez Castellanos, D. (2015). Avalanches, loading and finite size effects in 2D amorphous plasticity: Results from a finite element model. Journal of Statistical Mechanics-Theory and Experiment, 2015(2). https://dx.doi.org/10.1088/1742-5468/2015/02/P02011
MLA:
Sandfeld, Stefan, et al. "Avalanches, loading and finite size effects in 2D amorphous plasticity: Results from a finite element model." Journal of Statistical Mechanics-Theory and Experiment 2015.2 (2015).
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