Analysis on Torsional Fatigue Life of Turbo-Generator Shafts
Both low-cycle fatigue and high-cycle fatigue exist during torsional vibrations, but the impact of high-cycle fatigue has rarely been considered. In this paper, a torsional fatigue life analyzing method used for torsional vibration of turbo-generator shafts has been developed based on Manson-Coffin equation and high-cycle fatigue theory. The method has been used to estimate the torsional fatigue life in the most dangerous section of the shafts in a power plant. The cumulative torsional fatigue damage under two-phase short circuit simulation has been predicted.
Y. J. Gu and T. Z. Jin, "Analysis on Torsional Fatigue Life of Turbo-Generator Shafts", Key Engineering Materials, Vols. 467-469, pp. 1858-1863, 2011