Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Departures from Amonton's law of friction

  • 31 Accesses


The method of transition from light friction (rolling) to heavy friction (sliding) is used for analyzing the principal departure from Amonton's law (force of sliding friction T proportional to the normal pressure force N) for several metal — nonmetal pairs when the sliding time t approaches zero. It appears that the departure mode is, under these conditions, the same for all pairs which have been tested here. Experimental and theoretical evidence is given to prove that all other modes of departure from Amonton's law represent consequences of changes in the rubbing surfaces which occur during sliding and that, therefore, such departures will appear only after a long enough period of sliding.

This is a preview of subscription content, log in to check access.

Literature cited

  1. 1.

    P. W. Bridgman, A Study of Large Plastic Deformations and Fracture [Russian translation], Izd. Inostr. Lit., Moscow (1955); Phys. Rev.,48, 825 (1935).

  2. 2.

    G. I. Epifanov, “Experimental verification of the binomial friction law,” Dokl. Akad. Nauk SSSR,118, No. 6, Moscow (1958).

  3. 3.

    A. S. Akhmatov and Kh. Z. Ustok, “Dependence of the boundary-friction forces on the pressure,” in: Theory of Lubricating Action and New Materials [in Russian], Izd. Nauka, Moscow (1965).

  4. 4.

    G. I. Epifanov, “Asymptotic method for the study of sliding friction,” in: Instruments and Test Stands [in Russian], Izd. Akad. Nauk SSSR, Moscow (1956).

  5. 5.

    Yu. M. Mamontova, “Some results in a study by the asymptotic method of jumps during rubbing,” in: Theory of Mechanisms and Machines [in Russian], Vol. 3, Khar'kov (1967).

  6. 6.

    Yu. M. Mamontova, Candidate's Dissertation (1970).

  7. 7.

    I. V. Kragel'skii, Friction and Wear [in Russian], Mashgiz, Moscow (1962).

  8. 8.

    A. S. Akhmatov, Molecular Theory of Boundary Friction [in Russian], Moscow (1963).

Download references

Author information

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 11, pp. 94–98, November, 1974.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Mamontova, Y.M., Akhmatov, A.S. Departures from Amonton's law of friction. Soviet Physics Journal 17, 1553–1556 (1974).

Download citation


  • Normal Pressure
  • Pressure Force
  • Principal Departure
  • Departure Mode
  • Theoretical Evidence