175 citations · 273 across the 5 of their papers we have counts for
6 papers
"Irregularization" of Systems of Conservation Laws
Hunter Swan, Woosong Choi, Stefanos Papanikolaou +3
We explore new ways of regulating defect behavior in systems of conservation laws. Contrary to usual regularization schemes (such as a vanishing viscosity limit), which attempt to…
Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator
Stefanos Papanikolaou, Dennis M. Dimiduk, Woosong Choi +4
When external stresses in a system - physical, social or virtual - are relieved through impulsive events, it is natural to focus on the attributes of these avalanches. However, dur…
Orientational interaction and ordering of Cd_4 tetrahedra in a quasicrystal approximant
Woosong Choi, Christopher L. Henley, Marek Mihalkovic
We model the quasicrystal-related structure CaCd, a bcc packing of icosahedral clusters containing tetrahedra which undergo orientational orderings at T<100 K. We use general s…
Scaling theory of continuum dislocation dynamics in three dimensions: Self-organized fractal pattern formation
Yong S. Chen, Woosong Choi, Stefanos Papanikolaou +2
We focus on mesoscopic dislocation patterning via a continuum dislocation dynamics theory (CDD) in three dimensions (3D). We study three distinct physically motivated dynamics whic…
Is dislocation flow turbulent in deformed crystals?
Woosong Choi, Yong S. Chen, Stefanos Papanikolaou +1
Intriguing analogies were found between a model of plastic deformation in crystals and turbulence in fluids. A study of this model provides remarkable explanations of known experim…
Bending crystals: Emergence of fractal dislocation structures
Yong S. Chen, Woosong Choi, Stefanos Papanikolaou +1
We provide a minimal continuum model for mesoscale plasticity, explaining the cellular dislocation structures observed in deformed crystals. Our dislocation density tensor evolves…