A shaft is subjected to steady torsional stress =25 kpsi and alternating (fully reversed) bending stress =30
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A shaft is subjected to steady torsional stress τ=25 kpsi and alternating (fully reversed) bending stress σ=30 kpsi. The material is steel with SUT=70 kpsi, Sy=70 kpsi and Se=35 kpsi that includes the modifying factors.
- Calculate the static safety factor ηy for yield.
- Calculate the fatigue safety factor ηf for infinite life using Modified Goodman criterion.
- Calculate the fatigue safety factor ηf for infinite life using ASME Elliptic criterion.
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