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Документ Fatigue damage and failure of steam turbine rotors by torsional vibrations(2010) Bovsunovskyy, Anatoly; Chernousenko, Olga; Shtefan, Yevgenii; Bashta, DmitryThe 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.Документ Non-linear resonance vibrations of cracked beams in condition of driving force parameters variation(IMAC, 2008) Bovsunovskyy, Anatoly; Bovsunovskyy, OlegRelationship between the closing crack parameters and non-linear resonances.Документ The effect of damping and force application point on the non-linear dynamic behavior of a cracked beam at sub- and super-resonance vibrations(2006) Bovsunovskyy, Anatoly; Surace, C.; Bovsunovsky, OlegIt is shown the relationship between the crack sizes and non-linear resonanses.Документ Estimation of crack parameters by the level of the vibration response non-linearity of a cracked beam at super- and subharmonic resonances(2008) Bovsunovskyy, Anatoly; Bovsunovskyy, OlegThe proposed procedure of crack location and size estimation is based on the determination of the vibration response non-linearity around the superharmonic resonance of order 2/1 and subharmonic resonance of order 1/2 when the driving force is applied at different points.