Page 235 - Improving Machinery Reliability
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206 Improving Machinery Reliability
"0 .01 .02 .03 .04 .05 .06 .07 .08 .09 .IO .I I -12 .I3
Figure 3-84. Stress concentration factors for keyed shafts.
This is the expression for the factor of safety in case of uniaxial stresses.
In the case of combined stresses, the equivalent stresses for cq, and q,, should be
substituted in Equation 3-4, and Reference 42 shows how the equation for torsion
reduces to Equation 3-5. Using kf, instead of kf (obtained from Figure 3-85):
