Question

A circular rod made of ductile material with a fatigue strength, Sn= 280 MPa and a tensile yield strength of 350 MPa. The member is subjected to a varying axial load from 700 kN to – 300 kN. Assume Kf = 1.8 and F.S. = 2. Calculate the alternating stress Sa in terms of the diameter in MPa.

Name: a circular rod made of ductile material with a fatigue strength sn 280 mpa and a tensile yield strength of 350 mpa the member is subjected to a varying axial load from 700 kn to 300 kn assum 40067
Uploaded: 2023-05-30T03:40:01-08:00
Duration: 4 min 37 s
Channel: Madhur L
Description: a circular rod made of ductile material with a fatigue strength sn 280 mpa and a tensile yield strength of 350 mpa the member is subjected to a varying axial load from 700 kn to 300 kn assum 40067

          A circular rod made of ductile material with a fatigue strength,
Sn= 280 MPa and a tensile yield strength of 350 MPa. The member is
subjected to a varying axial load from 700 kN to – 300 kN. Assume
Kf = 1.8 and F.S. = 2. Calculate the alternating stress Sa in terms
of the diameter in MPa.

Added by Jessica M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Madhur L

05/30/2023

Step 1

The mean stress Sm is the average of the maximum and minimum stresses. In this case, the maximum stress is caused by the 700 kN load and the minimum stress is caused by the -300 kN load. Sm = (σmax + σmin) / 2 The alternating stress Sa is half the difference Show more…

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A circular rod made of ductile material with a fatigue strength, Sn= 280 MPa and a tensile yield strength of 350 MPa. The member is subjected to a varying axial load from 700 kN to – 300 kN. Assume Kf = 1.8 and F.S. = 2. Calculate the alternating stress Sa in terms of the diameter in MPa.