Fatigue damage and failure of steam turbine rotors by torsional vibrations

Abstract

The fatigue damage and failure of steam turbine rotors by torsional vibrations are investigated. Possible causes of the occurrence of torsional vibrations are discussed. Modeling of torsional vibrations of the shifting of a steam turbine, which occur under its operating conditions, has been performed, and the cyclic strength of the shifting under these vibrations has been estimated.