Problem 4 The Figure shows a shaft simply supported in ball bearings at A and B, and is loaded by a force F that fluctuates between FEmar = 8 kN and Fmin = 0. The shaft is made of AISI 1040 CD steel = 590 MPa) and has a fully corrected endurance (Sut limit Se = 180 MPa. infinite life is predicted, calculate the factor of safety. Estimate the life of the part. If F 200 mm 200 mm Hint: The fatigue strength fraction of Sut at 103 cycles is f = 0.86. 30 mm R2

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Problem 4
The Figure shows a shaft simply supported in ball bearings at A and B, and is loaded
by a force F that fluctuates between Fmax = 8 kN and F,min = 0. The shaft is made of AISI 1040 CD steel
(Sut
= 590 MPa) and has a fully corrected endurance
limit Se
180 MPa. Estimate the life of the part. If
F
%3D
A
infinite life is predicted, calculate the factor of safety.
200 mm
200 mm
Hint: The fatigue strength fraction of Sut at 103 cycles is
f = 0.86.
%3D
30 mm
OCO.00 0.02.0,0A0
R1
R2
00.2202
AD O CI.00
Transcribed Image Text:Problem 4 The Figure shows a shaft simply supported in ball bearings at A and B, and is loaded by a force F that fluctuates between Fmax = 8 kN and F,min = 0. The shaft is made of AISI 1040 CD steel (Sut = 590 MPa) and has a fully corrected endurance limit Se 180 MPa. Estimate the life of the part. If F %3D A infinite life is predicted, calculate the factor of safety. 200 mm 200 mm Hint: The fatigue strength fraction of Sut at 103 cycles is f = 0.86. %3D 30 mm OCO.00 0.02.0,0A0 R1 R2 00.2202 AD O CI.00
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