Abstract
Various models of subcritical fracture that make it possible to explain the significant decrease in the effective stress concentration factor compared with the theoretical value are described for fiber composites with a polymer matrix. The necessity of introducing a material parameter with the dimension of length to describe the scale effect of strength is substantiated. The biomechanical principle of stress concentration reduction by the use of curved fibers flowing around the hole is formulated.
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Original Russian Text © A.N. Polilov.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 55, No. 1, pp. 187–197, January–February, 2014.
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Polilov, A.N. Mechanisms of stress concentration reduction in fiber composites. J Appl Mech Tech Phy 55, 154–163 (2014). https://doi.org/10.1134/S0021894414010180
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DOI: https://doi.org/10.1134/S0021894414010180