1. 2. Assume that a material is quite ductile, so that elastic strains are small
ID: 1861598 • Letter: 1
Question
1.
2.
Assume that a material is quite ductile, so that elastic strains are small compared with plastic strains over most of the stress-strain curve. Plastic and total strains can then be taken as equivalent and Eq. 4.23 becomes Show that the strain hardening exponent n is then expected to be equal to the true strain at the engineering ultimate strength point-that is, .(Suggestion: Start by making substitutions into a = He" from Sections 4.5.1 and 4.5.2, to obtain an equation sigma - = f( , H, n) that gives engineering stress.) A material shows a true stress-true strain curve that can be approximated by MPa. Calculate the true ultimate tensile strength ( ) and the engineering ultimate tensile strength ( ) of this material.Explanation / Answer
The first ans=732.8Mpa
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.