For the plane strain elements shown in Figure P6–10, the nodal displacements are given a...

For the plane strain elements shown in Figure P6–10, the nodal displacements are given as

u₁ = 0:005 mm v₁ = 0:002 mm u₂ = 0:0 mm

v₂ = 0:0 mm u₃ = 0:005 mm v₃ = 0:0 mm

Determine the element stresses σ_x; σ_y; τ_xy; σ₁, and σ₂ and the principal angle θ_p. Let E = 70 GPa and n = 0:3, and use unit thickness for plane strain. All coordinates are in millimeters.