Plastic Deformation

Elastic fields of straight dislocations

· The elastic distortion associated with a straight screw dislocation is shown.
· The continuum elastic element a distance, r, from the dislocation line has a uniform shear stress : τ_θz = G γ_θz = G tan ψ= G(b/2πr).

From: Hull,
"Introduction to Dislocations," Pergamon (1965)