6 papers
Dislocation impediment by the grain boundaries in polycrystals
Yinguang Piao, Khanh Chau Le
Thermodynamic dislocation theory incorporating dislocation impediment by the grain boundaries is developed to analyze the shear test of polycrystals. With a small set of physics ba…
Thermal softening during high-temperature torsional deformation of aluminum bars
Khanh Chau Le, Yinguang Piao
A simple extension of the thermodynamic dislocation theory to non-uniform plastic deformations is proposed for an analysis of high-temperature torsion of aluminum bars. Employing a…
Thermodynamic dislocation theory: Size effect in torsion
Khanh Chau Le, Yinguang Piao
The thermodynamic dislocation theory developed for non-uniform plastic deformations is used here for the analysis of twisted copper wires. With a small set of physical parameters t…
Thermodynamic dislocation theory: torsion of bars
K. C. Le, Y. Piao, T. M. Tran
The thermodynamic dislocation theory developed for non-uniform plastic deformations is used here in an analysis of a bar subjected to torsion. Employing a small set of physics-base…
Non-uniform plastic deformations of crystals undergoing anti-plane constrained shear
Khanh Chau Le, Yinguang Piao
The present paper studies non-uniform plastic deformations of crystals undergoing anti-plane constrained shear. The asymptotically exact energy density of crystals containing a mod…
Distribution of dislocations in twisted bars
Khanh Chau Le, Yinguang Piao
An asymptotically exact continuum dislocation theory of single crystal bars under torsion is proposed. The dislocation distribution minimizing energy of the bar with zero torque is…