On the Friction Test for Metal Forming Applications

  • Sergei AlexandrovEmail author
  • Marko Vilotic
  • Dragisa Vilotic
Conference paper
Part of the Structural Integrity book series (STIN, volume 16)


The ring compression test is a conventional test for identifying the friction law for metal forming applications. This test is very widely used but has a significant disadvantage. In particular, if the friction stress is high, then a sticking region occurs over a part of the friction surface. In this case, the interpretation of experimental results is difficult because the friction law at sliding is not valid over the sticking region. If the friction stress is very high, then this region occupies the entire friction surface. In this case, the process becomes insensitive to the friction factor at sliding at all. In order to overcome this difficulty and keep the conventional procedure for identifying the friction law, it is proposed to carry out the compression test between fat and conical dies. The geometry of the conical die should be chosen such that no sticking region occurs on the friction surface.


Friction Sticking Metal forming 



This work was carried out within the framework of the international project supported by grants RFBR-18-51-76001 (Russia) and BULKSURFACE – 359 (Ministry of education, science and technological development, Serbia).


  1. 1.
    Liu, J.Y.: Upper-bound solutions of some axisymmetric cold forging problems. ASME J. Eng. Ind. 93, 1134–1144 (1971)CrossRefGoogle Scholar
  2. 2.
    Avitzur, B., Van Tyne, C.J.: Ring formation: an upper bound approach. Part 1: flow pattern and calculation of power. ASME J. Eng. Ind. 104, 231–237 (1982)Google Scholar
  3. 3.
    Avitzur, B., Van Tyne, C.J.: Ring formation: an upper bound approach. Part 2: process analysis and characteristics. ASME J. Eng. Ind. 104, 238–247 (1982)Google Scholar
  4. 4.
    Avitzur, B., Van Tyne, C.J.: Ring formation: an upper bound approach. Part 3: constrained forging and deep drawing applications. ASME J. Eng. Ind. 104, 248–252 (1982)Google Scholar
  5. 5.
    Avitzur, B., Sauerwine, F.: Limit analysis of hollow disk forging. Part 1: upper bound. ASME J. Eng. Ind. 100, 340–344 (1978)Google Scholar
  6. 6.
    Lee, J.H.: Upper bound analysis of the upsetting of pressure – sensitive polymeric rings. J. Mater. Process. Technol. 30, 601–612 (1988)zbMATHGoogle Scholar
  7. 7.
    Alexandrov, S.: An analysis of the axisymmetric compression of viscous materials. J. Mater. Process. Technol. 105, 278–283 (2000)CrossRefGoogle Scholar
  8. 8.
    Wu, M.-C., Yeh, W.-C.: Effect of natural boundary conditions on the upper-bound analysis of upset forging of ring and disks. Mater. Des. 28, 1245–1256 (2007)CrossRefGoogle Scholar
  9. 9.
    Alexandrov, S., Lyamina, E., Jeng, J.-R.: A general kinematically admissible velocity field for axisymmetric forging and its application to hollow disk forging. Int. J. Adv. Manuf. Technol. 88, 3113–3122 (2017)CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Sergei Alexandrov
    • 1
    • 2
    Email author
  • Marko Vilotic
    • 3
  • Dragisa Vilotic
    • 3
  1. 1.School of Mechanical Engineering and AutomationBeihang UniversityBeijing ShiChina
  2. 2.Ishlinsky Institute for Problems in Mechanics, Russian Academy of SciencesMoscowRussia
  3. 3.Faculty of Technical SciencesUniversity of Novi SadNovi SadSerbia

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