Advertisement

Soviet Powder Metallurgy and Metal Ceramics

, Volume 17, Issue 4, pp 263–268 | Cite as

Effect of mode of pressing on the stressed-strained state of bushing-type parts

II. Methods of calculating the distribution of stress and porosity
  • M. B. Shtern
  • I. D. Radomysel'skii
  • E. L. Pechentkovskii
  • G. G. Serdyuk
  • L. A. Maksimenko
Theory and Technology of the Component Formation Process
  • 11 Downloads

Conclusions

  1. 1.

    The solution of the boundary-value problem of the cold-pressing process does not depend on the type of loading surface. It is determined by the axial and lateral pressures as functions of porosity.

     
  2. 2.

    The tangential stress and additional porosity due to external friction are given by the solution of a Dirichlet problem for a system of equations of the elliptic type.

     
  3. 3.

    To each mode of pressing there corresponds a specific character of bending of layers parallel to the basis plane before pressing.

     

Keywords

Porosity Dirichlet Problem Basis Plane Tangential Stress Specific Character 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    I. D. Radomysel'skii et al., “Effect of mode of pressing on the stressed-strained state of bushing-type parts (Part I),” Poroshk. Metall., No. 3, 1–7 (1978).Google Scholar
  2. 2.
    D. D. Ivlev and G. I. Bykovtsev, Theory of the Plastically Strengthening Solid [in Russian], Nauka, Moscow (1971).Google Scholar
  3. 3.
    G. A. Meerson, “Present-day state of the key powder metallurgical processes,” in: Problems in Powder Metallurgy [in Russian], Izd. Akad. Nauk SSR, Kiev (1955), pp. 16–53.Google Scholar
  4. 4.
    I. D. Radomysel'skii, G. G. Serdyuk, and Yu. I. Kovalev, “Determination of the lateral pressure coefficient in the compaction of iron powders,” Poroshk. Metall., No. 9, 6–10 (1966).Google Scholar
  5. 5.
    V. V. Sokolovskii, Theory of Plasticity [in Russian], Vysshaya Shkola, Moscow (1969).Google Scholar
  6. 6.
    V. E. Perel'man, P. I. Perlin, and O. V. Roman, “Calculation of stress and density fields in the pressing of metal powders,” Poroshk. Metall., No. 9, 14–18 (1971).Google Scholar
  7. 7.
    R. Currant, Equations with Partial Derivatives [Russian translation], Mir, Moscow (1964).Google Scholar
  8. 8.
    I. D. Radomysel'skii and E. L. Pechentkovskii, “Effect of interactions with shaping elements on density distribution in parts from metal powders,” in: Theory and Practice of Pressing Processes [in Russian], Izd. Inst. Probl. Mater. Akad. Nauk Ukr. SSR, Kiev (1976), pp. 61–65.Google Scholar
  9. 9.
    M. Van Dyke, Perturbation Methods in Fluid Mechanics, Academic Press (1964).Google Scholar

Copyright information

© Plenum Publishing Corporation 1978

Authors and Affiliations

  • M. B. Shtern
    • 1
    • 2
  • I. D. Radomysel'skii
    • 1
    • 2
  • E. L. Pechentkovskii
    • 1
    • 2
  • G. G. Serdyuk
    • 1
    • 2
  • L. A. Maksimenko
    • 1
    • 2
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine
  2. 2.T. G. Shevchenko Kiev State UniversityUSSR

Personalised recommendations