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Generalized criterion of the long-term strength of viscoelastic materials

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A long-term strength condition of the same type as the Il'yushin [2] or Moskvitin [1] nonlinear criterion is proposed. A method is suggested for determining the stress and time functions forming part of the proposed criterion from the long-term strength diagrams and from the data of pulsed or stepped loading tests. It is shown, on the basis of the experimental data, that the proposed criterion, which in a particular case is identical with the Moskovitin criterion, describes the experimental results better than the Bailey criterion.

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Literature cited

  1. 1.

    V. V. Moskvitin, "Some problems of the long-term strength of viscoelastic media," Probl. Prochn., No. 2, 55–58 (1971).

  2. 2.

    A. A. Il'yushin, "A theory of long-term strength," Inzh. Zh. Mekh. Tverd. Tela, No. 3, 21–35 (1967).

  3. 3.

    P. M. Ogibalov, N. I. Malinin, V. P. Netrebko, and B. P. Kishkin, Structural Polymers, Pt. 1 [in Russian], Moscow (1972).

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Additional information

Scientific-Research Chemical-Engineering Institute, Moscow. Translated from Mekhanika Polimerov, No. 5, pp. 791–794, September–October, 1975.

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Bart, Y.Y., Trifonov, V.P., Kozachenko, A.B. et al. Generalized criterion of the long-term strength of viscoelastic materials. Polymer Mechanics 11, 678–681 (1975). https://doi.org/10.1007/BF00859641

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  • Experimental Data
  • Time Function
  • Viscoelastic Material
  • Generalize Criterion
  • Strength Condition