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ROD TORSION IN KINEMATIC CREEP MODES

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Journal of Applied Mechanics and Technical Physics Aims and scope

Abstract

Problems that describe the shaping of a residual twist angle to a rod under creep conditions with account for elastic recovery after unloading are considered. It is assumed that a constant linear twist angle is set for the section being formed, i.e., the section is under pure torsion conditions with no constraints to the ends of the rod. It is stated that strains and stresses depend only on time and two spatial coordinates in the cross-sectional plane of the rod. Direct and inverse problems of torsion of rectangular and angular rods in various kinematic creep modes are considered. The twist angle rate during the entire deformation process is set to be constant. An approach is proposed for the numerical calculation based on the finite element method, which makes it possible to obtain the stiffness characteristics of the section under torsion in the case of creep. It is shown that the minimum level of residual stresses is observed during relaxation deformation. The modes in which stresses significantly decrease in their concentration region are determined for a corner-type rod.

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Authors and Affiliations

  1. Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    I. A. Bashchikova

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  1. I. A. Bashchikova
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Correspondence to I. A. Bashchikova.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2022, Vol. 63, No. 5, pp. 185-196. https://doi.org/10.15372/PMTF20220519.

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Bashchikova, I.A. ROD TORSION IN KINEMATIC CREEP MODES. J Appl Mech Tech Phy 63, 891–902 (2022). https://doi.org/10.1134/S0021894422050194

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  • DOI: https://doi.org/10.1134/S0021894422050194

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