“…with δ αi s = 1 for (α i) = (4,13), (6,18), (8,17), (9,15), (10,16), (11,14) (1,16), (2,17), (3,18), (5,14), (7,13), (12,15) 0 otherwise (15) where µ and ν are the shear modulus and Poisson ratio, respectively, for isotropic materials, and where p α = m α × n α (edge dislocations are then parallel to p and screw to m = b /b. ρ α G,s/e corresponds to the GND density with a screw/edge character on slip system α.…”