Edge Dislocation Strain Field

Burgers vector, stress/strain around dislocation core, displacement field

Parameters

Energy/length E_L
Stress at (b,0)
Peierls stress ~
Tension
Compression
Zero
Edge dislocation (isotropic):
σ_xx = −Dy(3x²+y²)/(x²+y²)²
σ_yy = Dy(x²−y²)/(x²+y²)²
σ_xy = Dx(x²−y²)/(x²+y²)²
D=μb/2π(1−ν)
Energy/length: E_L=μb²ln(R/r_c)/4π(1−ν)