6 papers · 1 filter
Physical scaling laws in dislocation microstructures and avalanches from dislocation dynamics simulations
Missipsa Aissaoui, Charlie Kahloun, Oguz Umut Salman +1
Avalanche-like plastic bursts in crystalline materials follow power law statistics, but the scaling exponents and cutoff parameters vary widely in the literature ( ranging from…
Prediction of ideal orientations in velocity gradient-driven processes for large plastic deformations of crystals
Jalal Smiri, Oguz Umut Salman, Ioan R. Ionescu
We focus on the crystal lattice ideal orientations, also referred to as preferred or attractor orientations, in crystalline materials, and how they can be used to predict the final…
Inertia-induced power-law scaling in martensites
OÄuz Umut Salman, Alphonse Finel, Lev Truskinovsky
Martensites subjected to quasistatic deformation are known to exhibit power law distributed acoustic emission in a broad range of scales, however, the origin of the observed scalin…
Slip-dominated structural transitions
Kanka Ghosh, Oguz Umut Salman, Sylvain Queyreau +1
We use molecular dynamics to show that plastic slip is a crucial component of the transformation mechanism of a square-to-triangular structural transition. The latter is a stylized…
Large plastic deformation of voids in crystals
Jalal Smiri, Joseph Paux, Oguz Umut Salman +1
The mechanisms of void growth and coalescence are key contributors to the ductile failure of crystalline materials. At the grain scale, single crystal plastic anisotropy induces la…
Accounting for localized deformation: a simple computation of true stress in micropillar compression experiments
Jalal Smiri, Oguz Umut Salman, Matteo Ghidelli +1
Compression experiments are widely used to study the mechanical properties of materials at micro- and nanoscale. However, the conventional engineering stress measurement method use…