Exercise 1: 1D plasticity (Chapter 1) A cylindrical metal specimen of initial diameter d₁ =14 mm, initial length Lo=53 mm, strain hardening exponent n=0.31, strength coefficient K=665 MPa and reduction of area at fracture Arf=0.53 - Determine the true strain at maximum load and true strain at fracture Determine the length of specimen at maximum load and diameter at fracture Determine the maximum load force Determine the Load (F) on the specimen when a true strain &₁ =0.25 is applied during the tension test A second specimen of same material type is cold worked at 18% without producing necking Calculate the yield strength (σy)w and tensile strength (ou)w at cold worked What is the percentage of reduction of area at fracture (Arf)w of the cold worked