Tresca’s yield criterion: (2) Von Mises’s Criterion: (3) A cylinder sample with a diameter
(1) Tresca’s yield criterion: (2) Von Mises’s Criterion: (3) A cylinder sample with a diameter of 50 mm was compressed with a flat indenter (The friction between sample and the indenter can be ignored), and the sample yield at the pressure of 628 kN. When a compression stress of 10 MPa along circumferential direction is applied, calculate the yielding stress with the circumferential compression.