Numerical analysis of large elastoplastic deformations of bodies and continua and identification of their deformation diagrams under different types of loading

V.G. Bazhenov^∗ , E.V. Nagornykh^∗∗

National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603022 Russia

E-mail: ^∗bazhenov@mech.unn.ru, ^∗∗pavlyonkova@mech.unn.ru

Received September 19, 2022

ORIGINAL ARTICLE

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DOI: 10.26907/2541-7746.2022.4.316-328

For citation: Bazhenov V.G., Nagornykh E.V. Numerical analysis of large elastoplastic deformations of bodies and continua and identification of their deformation diagrams under different types of loading. Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2022, vol. 164, no. 4, pp. 316–328. doi: 10.26907/2541-7746.2022.4.316-328. (In Russian)

Abstract

Based on the experimental-computational approach, a method for identifying deformation diagrams of elastoplastic materials by considering the inhomogeneity of the stress-strain state and large deformations was developed. Examples of the application of this method for various types of loading of the tested samples were presented: tension and torsion of cylindrical rods, kinetic indentation of a ball and a cylinder, dynamic compression of tablet samples, etc. A technique for interpolating the deformation diagram to take into account the type of stress state was proposed.

Keywords: experimental-computational approach, elastoplastic material, numerical technique, tension, torsion, compression, static and dynamic indentation, construction of true deformation diagrams, large plastic deformations

References

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