Strength and ductility characteristics for a material with complex loading paths

Modeling of cyclic elastoplastic deformation of metals under arbitrary loading trajectories

“…Despite a significant number of works devoted to the investigation of regularities of the elastoplastic deformation of materials under complex loading, most experiments were carried out for monotone processes along multisegment broken and planar curvilinear strain trajectories with constant curvature [1-6]. The number of experiments involving complex trajectories, including planar and spatial trajectories with variable curvature and torsion, and complex cyclic deformation of materials that have been performed by now is significantly smaller [5][6][7][8][9][10][11]. At the same time, the verification of the physical reliability of constitutive relations of plasticity theory requires calculations according to developed model representations and the comparison of the numerical results with experimental data obtained on a broad class of complex strain trajectories with arbitrary curvature and torsion in monotone and cyclic modes of loading.…”