Abstract
This third report describes the effect of overlap of crankpin and journal on the bending strength, and the effect of web dimensions on the torsional strength.The results are as follows : (1) The stress concentration factor in bending is maximum at about S=0 and decreases as |S| increases, where S is the amount of the overlap of crankpin and journal.(2) In torsion, the maximum shearing stress in the crankpin fillet occurs in the plane about 50° to the plane of the crankthrow.(3) The stress concentration factor in torsion is much smaller than that in bending.(4) Web dimensions have greater effect on stress concentration factor in case of bending than in torsion, but fillet radius has approximately same effect both in bending and in torsion.
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