The stepped bar carries a load P = 20, 000 lb. It has a yield stress of 80 ksi, dimensional ratios b 1 / b 2 = 1.4 and a/b 2 = 0.131, and thickness t = 1 4 in: Determine the value of the fillet radius...

The stepped bar carries a load
P
= 20, 000 lb. It has a yield stress of 80 ksi, dimensional ratios
b
₁/b
₂
= 1.4 and
a/b
₂
= 0.131, and thickness
t
= 1 4 in: Determine the value of the fillet radius
a
that would lead to the onset of yielding under these conditions.