A steel cantilever member as shown below is subjected to atransverse load at its end that varies from 135 N to -45 N as axialload varies from 450 N to -110 N. Determine the required diameterat the change of section for infinite life using a factor of safetyof 2. The strength properties of the material are:
Sut=550 MPa, Sy=470 MPa, Se(corrected)=275 MPa,
Test data indicate that the theoretical stress concentration factorfor bending and axial loads are 1.44 and 1.63 respectively at thechange of cross-section. All dimensions are in mm. Use Goodmanfailure locus. Assume notch sensitivity, q=1. Neglect transverseshear.
