We develop a finite-element three-dimensional model of a Bridgman specimen with an aim to investigate its elastoplastic deformation in tension. The distribution of stresses in the cross section of the working part of the specimen for a wide range of loads is determined. It is shown that stresses acting at the center of the specimen in the stage of elastic deformation are lower than the stresses on its surface and, on the contrary, higher than the stresses in the stage of elastoplastic deformation. For a specimen made of 40Kh steel, we find a tensile force for which the normal stresses formed in its cross-section are uniform.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 5, pp. 132–136, September–October, 2020.
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Lenkovskyi, Т.М., Ivanytskyi, Y.L., Molkov, Y.V. et al. Analysis of the Stress-Strain State of a Bridgman Specimen in Axial Tension by the Finite-Element Method. Mater Sci 56, 722–726 (2021). https://doi.org/10.1007/s11003-021-00488-4
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DOI: https://doi.org/10.1007/s11003-021-00488-4