Conclusion
The deformation approach in the nonlinear mechanics of failure has been used to extend the method of equivalent states of strain to determine crack vertex opening for any propagation mechanism. The opening has been determined for transverse shear applied to a crack in a plate and to a crack from antiplanar shear on torsion in a cylindrical specimen having an external ring crack. The equivalent stress state method is simple and can be widely used in engineering.
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Translated from Fiziko-Khimicheskaya Mekhanika Materialov, No. 4, pp. 44–47, July–August, 1991.
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Pan'ko, I.M., Tim'yak, N.I. Extension of the equivalent stress state method to general-type crack opening. Mater Sci 27, 371–374 (1992). https://doi.org/10.1007/BF00723227
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DOI: https://doi.org/10.1007/BF00723227