Question: Problem 5 ( 3 0 Marks ) The shaft shown in the figure is machined from AISI 1 0 4 0 CD steel. The shaft

Problem

5 (30

Marks

)

The shaft shown in the figure is machined from AISI

1040

CD steel. The shaft rotates at

1600 r p m

and is supported in rolling bearings at A and B

.

The applied forces are

F 1 = 2500 l b f

and

F 2 = 1000

lbf

.

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.

Problem 5 ( 3 0 Marks ) The shaft shown in the

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