Dislocation drag from phonon wind in an isotropic crystal at large velocities

  title={Dislocation drag from phonon wind in an isotropic crystal at large velocities},
  author={Daniel N Blaschke and Emil Mottola and Dean Laverne Preston},
  journal={Philosophical Magazine},
  pages={571 - 600}
ABSTRACT The anharmonic interaction and scattering of phonons by a moving dislocation, the photon wind, imparts a drag force on the dislocation. In early studies, the drag coefficient B was computed and experimentally determined only for dislocation velocities v much less than transverse sound speed, . In this paper, we derive analytic expressions for the velocity dependence of B up to in terms of the third-order continuum elastic constants of an isotropic crystal, in the continuum Debye… 
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  • D. Blaschke
  • Physics, Materials Science
    Journal of the Mechanics and Physics of Solids
  • 2021


Velocity dependent dislocation drag from phonon wind and crystal geometry
  • D. Blaschke
  • Physics, Materials Science
    Journal of Physics and Chemistry of Solids
  • 2019
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