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

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