Unformatted text preview: – engineering strain curve for the material. Plot the true stress-true strain curve (Please use Excel) Determine Y, K, and n. 2. Determine the true strain at maximum load for a material that follow the Hollomon constitutive equation. 3.- A metal is yielding plastically under the stress state shown in the figure. a) Label the principal axes according to their proper numerical convention. b) What is the yield stress using the Tresca criterion? c) What if the von Mises criterion is used? d) The stress state causes measured strains of ε 1 =0.4, and ε 2 =0.1. What is the value of ε 3 ?...
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- Spring '08
- 3rd millennium, Honor Code pledge, stress-true strain curve, engineering strain curve, aluminum tension-test specimen