The shaft shown in the figure is machined from AISI 1040 CD steel. The shaft rotates at 1600rpm and is supported in rolling bearings at A and B. The applied forces are F1 = 2500 lbf andF2 = 2500 lbf. The location of critical bending moment from 10.5" from point A, wherebending moment is 14 750 lbf·in.Determine the minimum fatigue factor of safety based on achieving infinite life. Yieldstrength is 71 kpsi. If infinite life is not predicted, estimate the number of cycles to failure.Also check for yielding.Note: for the given ratio of r/d = 0.0625/1.625 = 0.04, D/d = 1.875/1.625 = 1.15 the stressconcentration is given by K, =1.95. Also, use the correction of the endurance limit based onthe surface factor, ka, size factor, kb, and loading factor, ke-8 in--8 in--8 in-3 in-10 in--10 ininAll fillets in R.1/4

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Answered: If infinite life is not predicted,…

Engineering

Mechanical Engineering

If infinite life is not predicted, estimate the number of cycles to failure. ing.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

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 F1 = 2500 lbf and
F2 = 2500 lbf. The location of critical bending moment from 10.5" from point A, where
bending moment is 14 750 lbf·in.
Determine the minimum fatigue factor of safety based on achieving infinite life. Yield
strength is 71 kpsi. If infinite life is not predicted, estimate the number of cycles to failure.
Also check for yielding.
Note: for the given ratio of r/d = 0.0625/1.625 = 0.04, D/d = 1.875/1.625 = 1.15 the stress
concentration is given by K, =1.95. Also, use the correction of the endurance limit based on
the surface factor, ka, size factor, kb, and loading factor, ke
-8 in-
-8 in-
-8 in-
3 in
-10 in-
-10 in
in
All fillets in R.
1/4

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