$(15$ points$)$ The same stepped bar with fillets is loaded in pure bending as shown in

Appendix C Figure C$-10$ Norton. Use M$=9$N$.$m $($note units$).$

$2$

a$)(8$ points$)$ Determine nominal stress at the fillets in MPa.

b$)(7$ points$)$ Determine the actual stress at the fillets in MPa $.(15$ points$)$ The same stepped bar with fillets is loaded in pure bending as shown in

Appendix C Figure C$-10$ Norton. Use M$=9$N$.$m $($note units$).$

$2$

a$)(8$ points$)$ Determine nominal stress at the fillets in MPa.

b$)(7$ points$)$ Determine the actual stress at the fillets in MPa $.$