Question: The shaft, with circular section, has been fixed from left and made of steel with Sy = 4 7 0 MPa, Sut = 5 5

The shaft, with circular section, has been fixed from left and made of steel with Sy=470 MPa, Sut=550 MPa. The end of shaft is under a fluctuating force which varies between 60 N to 180 N as well as a fluctuating tortional moment of 0-100N.m
The shaft surface is machined, and the reliability is 50%. Find the fatigue safety factor at points A and B.
The shaft, with circular section, has been fixed

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