H.H.Wills Phsical Laboratory
University of Bristol On the Equations of Motion of Crystal Dislocations
M.S. received 25th August 1948, and in amended
form 25th November 1948
On the Equations of Motion of Crystal Dislocations
It is shown that when a Burgers screw dislocation moves with velocity
v it suffers a longitudinal contraction by the factor
(1-[(v2)/( c2)]), where c is the velocity of transverse
sound. The total energy of the moving dislocation is given by th
E = E0 /(1-[(v2)/( c2)])1/2, where E0
is the potential energy of the dislocation at rest. Taylor
disloactions behave in a qualitatively similar manner,
complicated by the fact that both longitudinal and transverse
displacements and sound velocities are involved.
File translated from TEX by TTH, version 2.00.
On 29 Apr 2004, 21:41.