The stress-strain diagram for many metal alloys can be described analytically using the Ra...

The stress-strain diagram for many metal alloys can be described analytically using the Ramberg-Osgood three parameter equation  = σ/Ε + kσ". where E, k, and n are determined from measurements taken from the diagram, Using the stress-strain diagram shown in the figure, take E = 30(103) ksi and determine the other two parameters k and n and thereby obtain an analytical expression for the curve.