Problem points$]$

A $0\mathrm{.}5-$inch diameter steel rod is assumed to have elastic, perfectly plastic behavior $($see the stress$-$strain

diagram below$).$

a$)$ What is the yield strength $({}_y)$ of the rod?

b$)$ What is the yield strain $({}_y)$ of the rod?

c$)$ What is the internal stress in the rod due to the tension

strains below?

$=0\mathrm{.}0005i\frac{n}{i}n$

$=0\mathrm{.}003i\frac{n}{i}n$