Modelling of the process of vibro-mechanical correction in long-length parts

The article describes a vibro-mechanical method of residual stress relaxation in long-length parts of the “shaft” type. The method is based on creation and uniform motion of plasto-elastic deformation zone generated by the bending moment at continuous rotation of the part. This leads to occurrence of the high-cyclic loading. Under controlled high-cyclic loading there occur accumulation and subsequent relaxation of residual stresses. The process of vibro-mechanical residual stress relaxation is described by a mathematical model which establishes relation between the geometrical, physical-mechanical and process-dependent parameters. The mathematical model is based on the energy approach to the description of plasto-elastic deformation of a part at high-cyclic loading. The results of experiments with the application of the presented model are given in graph form. They describe the dependence of the residual stress values on the duration of vibro-mechanical processing.