Experimental Study of Regularities of Plastic Deformation of Metals along Plane Curvilinear Trajectories

摘要

It is shown, that on closed curvilinear trajectories of large and average constant curvature the angle of approach and the functions of plasticity periodically change, the is explained by the influence of the third invariant of tensor-deviator of deformations, and the amplitude of change essentially depends on curvature. It is established, that in theoretical researches of the processes of complex deformation of materials on closed curvilinear trajectories the approximation of the function of plasticity can be used only for trajectories of small curvature, and the processes of deformation under the conditions of planar stressed state can be described both by the equations of the theory of plasticity of small torsion, and a hypothesis of complanarity.