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Pressure and normal stress effects in shear yielding

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Abstract

The classical yielding theory of Tresca is generalized to include the effects of both hydrostatic pressure and normal stress in the slip plane. The three-parameter theory is the most general for polyhedral yield surfaces. The new theory is applied to the yielding of polystyrene. Two modes of slip: a brittle mode in the form of coarse slip bands, and a ductile mode in the form of fine slip bands, are studied separately. All three parameters are determined for each mode.

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Li, J.C.M., Wu, J.B.C. Pressure and normal stress effects in shear yielding. J Mater Sci 11, 445–457 (1976). https://doi.org/10.1007/BF00540925

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  • DOI: https://doi.org/10.1007/BF00540925

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