Skip to main content

Low-cycle deformation of the structures in a nuclear power plant and methods for calculating them

It is proposed that the fatigue strength of structures in nuclear power plants with a quite long service life be analyzed in two stages: first, the type and location of the process and the effect of basic factors are determined by method of direct analysis of stable cycles and then a more accurate stepped analysis of the deformation kinetics is performed. The real properties of a material are systematized, taking account of creep, in ways that depend on the different types of processes. The methods for calculating the conditions and mechanisms of the progressing shape change and alternating-sign flow are refined. An example of the instability of the processes of cyclic deformation, which limits the possibility of operating structures beyond the limits of elastic adaptability, is examined. The possibilities and conditions for algorithmitization of the choice of material models and ensuring computational accuracy in calculations of deformation kinetics are discussed.

This is a preview of subscription content, access via your institution.

References

  1. Safety of Russia. Risk Analysis and Safety Problems, in four parts, MGF Znanie, Moscow (2006–2007).

  2. N. A. Makhutov, Structural Strength, Service Life, and Technogenic Safety. Part 1: Strength and Service Life Criteria. Part 2: Service Life and Safety Validation, Nauka, Novosibirsk (2005).

    Google Scholar 

  3. Handbook of the Mechanical Properties of Steels and Alloys under Nonstationary Loads, UrO RAN, Ekaterinburg (1996).

  4. C. Frederick and P. Armstrong, “Convergent internal stresses and steady cyclic states of stress,” J. Strain Anal., No. 2, 134–141 (1966).

    Google Scholar 

  5. W. Reinhardt, “A noncyclic method for plastic shakedown analysis,” J. Pressure Vessel Technol., 130, 1–6 (2008).

    Article  Google Scholar 

  6. D. A. Gokhfled, O. F. Chernyavskii,V. N. Madulin, and O. S. Sadakov, “Analysis of the process of progressing accumulation of unilateral deformations under cyclic thermal loads under creep conditions,” Probl. Prochn., No. 9, 8–12 (1980).

    Google Scholar 

  7. D. Gokhfeld and O. Cheniavsky, Limit Analysis of Structures at Thermal Cycling, Sijthoff and Noordhoff Intern, Pub. Alphen aan den Rijn – the Netherlands, Rockville, Maryland, USA (1980).

    Google Scholar 

  8. D. A. Gokhfled and O. F. Chernyavskii, Carrying Capacity of Structures under Repeated Loads, Mashinostroenie, Moscow (1979).

    Google Scholar 

  9. J. Bree, “Elastic-plastic behavior of thin tubes subjected to internal pressure and intermittent high-heat fluxes with application to fast nuclear reactor fuel elements,” J. Strain Anal., No. 2(3), 226–238 (1967).

  10. PNAE G-7-002-86, Standards for Strength Calculations for Equipment and Pipelines in Nuclear Power Facilities, Energoatomizdat, Moscow (1989).

Download references

Author information

Authors and Affiliations

Authors

Additional information

Translated from Atomnaya Énergiya,Vol. 107, No. 3, pp. 136–142, September, 2009.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Makhutov, N.A., Gadenin, M.M., Chernyavskii, O.F. et al. Low-cycle deformation of the structures in a nuclear power plant and methods for calculating them. At Energy 107, 173–179 (2009). https://doi.org/10.1007/s10512-010-9212-4

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10512-010-9212-4

Keywords

  • Nuclear Power Plant
  • Inelastic Deformation
  • Cyclic Deformation
  • Stable Cycle
  • Deformation Property