The Rigid Rod Model of Dislocation Resonance including Applications to Point Defect Drag
نویسندگان
چکیده
The rigid rod model of dislocation motion is used -to unify, simplify and clarify various types of theories of dislocation damping effects. It leads to a simple Debye-type relaxation process for overdamped resonance. Deviations from the rigid rod phenomenological formalism are found in cases where restoring or viscous forces act at discrete points rather than continuously, and they are evaluated by comparisons with exact solutions. The deviations are found to lead generally to corrections which are smaller than other uncertainties, except for the case of point defect drag with very small pinning point densities. This establishes the range of validity of the rigid rod model.
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