Complex loading beyond the elastic limit on three-dimensional trajectories

Determinative equations of the plasticity theory are proposed to describe some complex deformation processes along the three-dimensional trajectories of small torsion and arbitrary curvature. Methods of concretization have been developed for the scalar functions. Assumptions and hypotheses obtained for determinative equations, ways of scalar function concretization, and determinative equations themselves have been experimentally substantiated. Translated from Prikladnaya Mekhanika, Vol. 34, No. 12, pp. 16–25, December, 1998.