“…φ x and φ y denote the rotations about the x and y axes, respectively. Considering the kinematical relations for small deformations, one can describe the relationship between the strains and the displacements by: ϵ = [ϵ xx , ϵ yy , γ xy ] T ϵ 0 + zκ 1 ; γ = [γ xz , γ yz ] T ϵ s (4) where ϵ 0 = [u 0,x , v 0,y , u 0,y + v 0,x ] T , κ 1 = [ϕ x,x , ϕ y,y , ϕ x,y + ϕ y,x ] T and ϵ s = [ϕ x + w 0,x , ϕ y + w 0,y ] T .…”