(Solved):
A shaft is loaded in bending and torsion such that Ma=70Nm,Ta=45Nm,Mm=55Nm ...
A shaft is loaded in bending and torsion such that Ma?=70N?m,Ta?=45N?m,Mm?=55N?m, and Tm?=35N?m. For the shaft, Su?=700MPa,Sy?=560MPa, the true fracture strength is 1045MPa, and a fully corrected endurance limit of Se?=210MPa is assumed. Let Kf?=2.2 and Kfs?=1.8. With a design factor of 2.0 determine the minimum acceptable diameter of the shaft using the (a) DE-Goodman criterion. (b) DE-Morrow criterion. (c) DE-Gerber criterion. (d) DE-SWT criterion. Discuss and compare the results.