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.

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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://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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