About "burgers"--Dislocations and plastic flow

"burgers" presents a model for dislocation motion in crystalline solids. It displays the two planes of atoms on either side of a slip plane. Single dislocations (of either sign) or a pair of dislocations can be introduced oriented at any angle with respect to the Burgers vector. The screw and edge dislocations are limiting cases. A shear stress can be applied and the critical shear stress for failure of the perfect crystal, for dislocation motion, and for kink motion along a dislocation can be empirically determined. An impurity of variable pinning strength may be introduced and its pinning strength measured. A Frank-Read source is also illustrated.

"burgers" was programmed by Russ Thompson.

About the SSS Project.


Table of contents for Chapter 15 of "Simulations for Solid State Physics"
  1. Introduction
  2. About the "burgers" model
  3. Perfect crystal
  4. Single dislocation
    1. Dislocation geometry
    2. Dislocation width and energy
  5. Critical shear stress with dislocations
  6. Impurity pinning
  7. Dislocation interactions
  8. Frank-Read source
  9. Summary
  10. Appendix: "burgers" -- the program