Edge Dislocation Strain Field
Burgers vector, stress/strain around dislocation core, displacement field
Parameters
Burgers vector |b|:
1.0
Å
Poisson ratio ν:
0.30
Shear modulus μ:
40
GPa
Core radius r_c:
0.3
Display field:
σ_xx (normal stress)
σ_yy (normal stress)
σ_xy (shear stress)
Hydrostatic pressure
u_x displacement
u_y displacement
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)