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A continuum damage mechanics model on low cycle fatigue life assessment of steam turbine rotor
Ist Teil von
The International journal of pressure vessels and piping, 2001-01, Vol.78 (1), p.59-64
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2001
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A nonlinear Continuum Damage Mechanics model (CDM) is proposed to assess the low cycle fatigue life of a steam turbine rotor, in which the effects of mean stress are taken into account and the damage is accumulated nonlinearly. The model is applied to a 200
MW steam turbine under cold start and sliding parameter stop. The results are compared with those from the linear accumulation theory that is dominant in life assessment of steam turbine rotors at present. The comparison results show that the nonlinear CDM model describes the accumulation and development of damage better than the linear accumulation theory.