2014/11/30 by Stefan Sandfeld, Zoe Budrikis, Stefano Zapperi +2 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Adhesion, Friction, and Surface Interactions #Amorphous solid #Chemistry #Composite material #Crystallography #Finite element method #Lattice (music) #Materials science #Mechanics #Metallic Glasses and Amorphous Alloys #Physics #Plasticity #Statistical physics #Theoretical and Computational Physics #Thermodynamics #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1088/1742-5468/2015/02/p02011
Journal of Statistical Mechanics: Theory and Experiment, 2015, P02011
openalex publication_date 2015/02/10 · arxiv created 2015/02/11 · arxiv updated 2015/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.