a	weld throat thickness
G	shear modulus
h, hp	leg lengths
k	thermal conductivity
Kt	stress concentration factor (SCF)
Ktt	stress concentration factor for tensile (axial) load
Ktb	stress concentration factor for bending load
Kts	stress concentration factor for shearing load
m, p	exponents dependent on the loading mode
n	stress field exponent for a sharp corner for axial and bending load
ns	stress field exponent for a sharp corner subjected to shearing load
P	regular function represented by polynomials
Pt, Pb, Ps	P functions corresponding to tensile, bending, and shearing load, respectively
Q	magnitude of the heat flux
q max	magnitude of the maximum heat flux
q nom	magnitude of the nominal heat flux at the end of the body
t	thickness of the main plate
T	thickness of the attachment plates
T temp	temperature
W	displacement component corresponding to the anti-plane shear
X = ρ/(ρ + a)	normalized toe radius parameter
Y = a/(a + t)	normalized weld thickness parameter
Z = T/a	normalized attachment plate thickness parameter
Z 0	reference T/a value
|∇Ψ|	magnitude of the displacement (temperature) gradient
|∇Ψ|max	magnitude of the maximum displacement (temperature) gradient
|∇Ψ|nom	magnitude of the nominal displacement (temperature) gradient
θ	weld angle
κ	correction function for the attachment plate thickness T/a
κt	correction function κ for tensile (axial) load
κb	correction function κ for bending load
κs	correction function κ for shearing load
Ψ(x,y)	potential function representing temperature or anti-plane displacement
∂Ψ/∂n	normal derivative at the bounding contour
ρ	weld toe radius
σ 1	first principal stress for tensile or bending load
σ 1max	maximum value of the first principal stress
σt	nominal tensile (axial) stress
σb	nominal bending stress
τ max	maximum shear stress at the weld toe due to shearing load
τ s	nominal shear stress