At a machined shaft shoulder the small diameter d is 1.100 in, the large diameter D is 1.65 in, and the fillet radius is 0.11 in. The bending moment is 1260 lbf . in and the steady torsion moment is 1100 Ibf . in. The heat-treated steel shaft has an ultimate strength of Sut = 105 kpsi and a yield strength of S, = 82 kpsi. The reliability goal for the %3D endurance limit is 0.99. a) Determine the fatigue factor of safety of the design using each of the fatigue failure criteria described in this section b) Determine the yielding factor of safety Solution:

At a machined shaft shoulder the small diameter d is 1.100 in, the large diameter D is 1.65 in, and the fillet radius is 0.11 in. The bending moment is 1260 lbf . in and the steady torsion moment is 1100 Ibf . in. The heat-treated steel shaft has an ultimate strength of Sut = 105 kpsi and a yield strength of S, = 82 kpsi. The reliability goal for the %3D endurance limit is 0.99. a) Determine the fatigue factor of safety of the design using each of the fatigue failure criteria described in this section b) Determine the yielding factor of safety Solution:

Elements Of Electromagnetics

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ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.

Question

At a machined shaft shoulder the small diameter d is 1.100 in, the large diameter D is 1.65 in, and the fillet radius
is 0.11 in. The bending moment is 1260 Ib; . in and the steady torsion moment is 1100 lb; . in. The heat-treated
steel shaft has an ultimate strength of Sut = 105 kpsi and a yield strength of S, = 82 kpsi. The reliability goal for the
endurance limit is 0.99.
a) Determine the fatigue factor of safety of the design using
each of the fatigue failure criteria described in this section
b) Determine the yielding factor of safety
Solution:

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