Increasing the Stress State in the Deformation Zone for Cylindrical Parts under Surface Plastic Deformation

This paper presents the new kinematics of reeling rollers that provide surface plastic deformation of low rigidity rollers. Mathematical models of the hardening process are built based on the small elastic deformation theory and the finite element method. The models are used to determine the stress state depending on the shape and the kinematics of the indenter. The effect of four different schemes of deformation on the stress state is considered, that are skiving, roller burnishing, burnishing by one or two rollers that rotate about a diametrical axis. It is established that the geometry, shape, kinematics and relative position of the elements of the deforming tool are the main factors that influence the stress-strain state of the parts.

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