Strength of Materials

, Volume 48, Issue 6, pp 733–739 | Cite as

Creep of Steam-Turbine Diaphragm Under Variable Loading Conditions

  • N. G. Shul’zhenkoEmail author
  • A. V. Asaenok
  • B. F. Zaitsev
  • N. N. Grishin
  • A. N. Gubskii

The authors put forward a procedure of creep analysis for variable loading conditions, which involves the use of the incremental creep theory and finite element method. Variable loading with load increase and relief at a constant temperature is considered as a stepwise process. The authors study a growth of deflections and stress relaxation in a intermediate-cylinder diaphragm of a steam turbine in various loading modes as well as special features of residual stress distribution in fixed blades.


diaphragm steam turbine variable loading 3D finite element creep hardening theory stepwise method 


  1. 1.
    N. G. Shulzhenko, A. V. Asaenok, B. F. Zaitsev, et al., “Creep analysis of steam turbine welded diaphragm,” Strength Mater., 44, No. 4, 419–428 (2012).CrossRefGoogle Scholar
  2. 2.
    L. A. Shubenko-Shubin (Ed.), Strength of Steam Turbines [in Russian], Mashinostroenie, Moscow (1973).Google Scholar
  3. 3.
    V. L. Taylor, “Stress and deflection test of steam-turbine diaphragm,” Trans. ASME, No. 7, 877–890 (1951).Google Scholar
  4. 4.
    V. K. Naumov, “Analysis of diaphragms for steam and gas turbines,” in: A Study of Elements of Steam and Gas Turbines and Axial Compressors [in Russian], Mashgiz, Leningrad (1960), pp. 310–312.Google Scholar
  5. 5.
    N. D. Sentsov, “Some findings of the study of deflections and stresses in the welded diaphragms of steam turbines,” Énergomashinostroenie, No. 8, 6–8 (1958).Google Scholar
  6. 6.
    V. L. Ingul’tsov, “Analysis of diaphragm as a half-ring on an elastic supporting contour,” Énergomashinostroenie, No. 11, 1–5 (1961).Google Scholar
  7. 7.
    G. F. Kulagina, “Experimental investigation of stresses and deflections in diaphragms,” in: A Study of Elements of Steam and Gas Turbines and Axial Compressors [in Russian], Mashgiz, Leningrad (1960), pp. 333–346.Google Scholar
  8. 8.
    B. F. Zaitsev, N. G. Shul’zhenko, and A. V. Asaenok, “Stress-strain state and contact phenomena in supporting of steam turbine diaphragm,” Probl. Mashinostr., 9, No. 3, 35–45 (2006).Google Scholar
  9. 9.
    V. I. Rozenblyum, “Creep analysis of turbine HP-stage diaphragms,” Inzh. Sb., 20, 49–54 (1954).Google Scholar
  10. 10.
    I. Z. Tseitlin, “Creep analysis of steam turbine diaphragms,” Énergomashinostroenie, No. 12, 6–11 (1974).Google Scholar
  11. 11.
    N. I. Vinogradov, “A study of creep in full-scale diaphragms of high-power turbine,” in: Thermal Stresses in Structural Elements [in Russian], Issue 10 (1970), pp. 35–43.Google Scholar
  12. 12.
    N. N. Shabrov and M. V. Znamenskaya, “Steam turbine diaphragm analysis by superelement method,” Tr. TsKTI, No. 265, 43–47 (1991).Google Scholar
  13. 13.
    I. A. Birger and B. F. Shorr (Eds.), Thermal Strength of Machine Parts [in Russian], Mashinostroenie, Moscow (1975).Google Scholar
  14. 14.
    K. Washizu, Variational Methods in Elasticity and Plasticity, Pergamon Press, Oxford (1982).Google Scholar
  15. 15.
    A. V. Asaenok, B. F. Zaitsev, and N. G. Shul’zhenko, “Vibration analysis of cyclically symmetric structures by three-dimensional finite elements,” Probl. Mashinostr., 3, Nos. 3–4, 22–28 (2000).Google Scholar

Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • N. G. Shul’zhenko
    • 1
    Email author
  • A. V. Asaenok
    • 1
  • B. F. Zaitsev
    • 1
  • N. N. Grishin
    • 2
  • A. N. Gubskii
    • 2
  1. 1.Podgornyi Institute for Mechanical Engineering ProblemsNational Academy of Sciences of UkraineKharkovUkraine
  2. 2.PJSC TURBOATOMKharkovUkraine

Personalised recommendations