A cylindrical sample with an initial diameter of 2 in. and a height of 6 in. is upset in an open-die forge to a height of 1 in. and remains circular in cross section. A lubricant is used with a...

A cylindrical sample with an initial diameter of 2 in. and a height of 6 in. is upset in an open-die forge to a height of 1 in. and remains circular in cross section. A lubricant is used with a coefficient of friction of 0.10, and the press velocity is 60 ft/min. The material is a 1015 carbon steel at 800°C, and the value of C (MPa) is 148 and rn is 0.10.

a. What is the engineering strain in the height direction?

b. What is the true strain in the height direction?

c. What is the pressure-multiplying factor?

d. What is the flow stress in psi?

e. What force is required in tons? (a. -0.833 b. -1.79 c. 1.185 d. 27,500 psi e. 307 tons)