The shaft shown in the figure is machined from AISI 1040 CD steel. The shaft rotates at 1600 rpm
and is supported in rolling bearings at A and B. The applied forces are Fi 10 kN and
F2 = 4 kN. Determine the minimum fatigue factor of safety based on achieving infinite life. If
infinite life is not predicted, estimate the number of cycles to failure. Also check for yielding.
30 mm-
A
192 mm
40 mm
12 mm
240 mm
192 mm
-45 mm
F₂
240 mm
All fillets 1.5 mm R.
192 mm
42 mm
72 mm
12 mm
B
30 mm
