1.A homogeneous, isotropic material is known to have a yield strength (?o) of 50 ksi in both tension and compression.
(a) Sketch and identify the Tresca (maximum shear stress) and von Mises (maximum distortion energy) failure criteria in two-dimensional principal stress space (i.e., ?2 vs. ?1) for the above material.
2.The velocity distribution for the flow of oil (SAE 20W) at 150 degrees between two plates is given by y(y-4) mm/s, where y is measured in mm and the space between the plates is 4mm. Determine the shear stress at each wall and the maximum shear stress.