Question

A shaft is loaded in bending and torsion such that Ma- 73.7 N-m, Ta -48.8 Nm, Mm = ? 7.5 N·m, Tm = 30.9 N. m. For the shaft, SU-630 MPa and Sy = 495 MPa, and a fully corrected endurance limit of Se -190 MPa is assumed. Let Kf - 2.13 and Kfs-1.89 Part 1 out of 2 With a design factor of 1.9, determine the minimum acceptable diameter of the shaft using the DE-Gerber criterion, the DE-elliptic criterion, the DE-Soderberg criterion, and the DE-Goodman criterion

Answer 1

Textbook = Mechanical enginnering design by Shigley's

30 y(k4fm), 3で.rs Tm) B 3oy-8么 p:/xm う / 841° ( 4.12 la

2. 3 。.Cy[m3W1 r), 3(1.gay 3。ๆ")") 49作'-'

Se 63-y1o
the goodman creterion is same as soderberg creterion the only differenc is S_Y replace S_UT so in part4 we take direct values from part 3 if u have problem in equations then cmt i will provide the equatins

by the way you can easily get the book form net

best of luck