申論題

3. (20 Points) Determine the stress state and the corresponding von Mises cquivalent stress of the point A subjected to the plane-strain condition, knowing that the following strains have been obtained by the use of the rosette shown: ε₁ = -50 x. Assume that Young's modulus and Poisson's ratio of the material are 200 GPa and 0.3, respectively.