Strength of Materials

, Volume 20, Issue 11, pp 1540–1544

Stressed state of axially loaded turbine journal lips

  • V. I. Sarchenko
  • V. V. Nakonechnyi
  • M. Ya. Kodner
  • V. A. Berman
Scientific-Technical Section
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Conclusions

  1. 1.

    In loading a gently sloping conical shell of average thickness (h/R=0.0.08; 0.11) with an axial force, its stress-strain state is characterized mainly by bending in the meridional and circumferential directions. This state can be taken as two-dimensional.

     
  2. 2.

    Thin cylindrical ribs on the shell surfaces cause meridional stress concentration and practically do not affect the circumferential stress distribution.

     
  3. 3.

    The strses concentration around a hole in a gently sloping conical shell of average linearly variable thickness should be compared qualitatively with the stress concentration around a hole in a bending plate.

     
  4. 4.

    The stress concentration factor for the stresses around a hole, the axes of which is parallel to the shell axis (in case of conical shells loaded with an axial force), is less than that for stresses around a hole perpendicular to the shell surface.

     
  5. 5.

    The presence of ribs and a large number of holes significantly changes the stressed state of a shell. Therefore, based on data on shells, the stressed state of such a complex model, like that of a turbine journal-lip, can be estimated only approximately.

     

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Literature Cited

  1. 1.
    V. V. Nakonechnyi; Stress Concentration near Holes in Bent Plates [in Russian], Dep. Kr. NIINTI 5.14.85, No. 1021, Kiev (1985).Google Scholar
  2. 2.
    P. I. Perlin and A. Z. Sternshis, “Stress distribution in an elastic layer with a cylindrical hole,” Tr. Mosk. Fiz.-Tekh. Inst., Ser. Aerofiz. Prikl. Mat., Mosk. Fiz.-Tekh. Inst., Dolgoprudnyi (1980), pp. 11–13.Google Scholar

Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • V. I. Sarchenko
  • V. V. Nakonechnyi
  • M. Ya. Kodner
  • V. A. Berman

There are no affiliations available

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