l	length of lap
l1,l2	length of elements
b	width of joint
δ1, δ2	width of element 1, 2
δk	width of adhesive layer
E1,E2	Young’s modulus of the material 1, 2
G1,G2	Kirchoff modulus 1, 2
ν1,ν2	Poisson modulus 1, 2
Ek	Young’s modulus of adhesive
Gk	Kirchoff modulus of adhesive
νk	Poisson modulus of adhesive
P	force loading joint
γ	shape strain
ε	linear strain
τ	shear stress
σ	normal stresses