In a metal ductile sheet, they were calculated on the basis of standard tests anisotropic factors R0 = 0.9, R45 = 1.3 and R90 = 1.9.
(a) Assess whether the material is steel or alloy of titanium or zinc alloy.
b) Calculate the minimum cup diameter that can be generated from the original disk diameter D0 = 100 mm.
(c) in the shaping of the cup will occur the creation of "ears"? The diagram can also be used for the answer