Dynamics of regular microrelief formation on internal cylindric surfaces

An analysis of modern literature sources to search for mathematical models describing the dynamics process forming a regular microrelief on inner cylindrical surface parts, gas transmission equipment operating in severe conditions, order increase their life. It is established that there are no this and peculiarities its implementation under point action deforming element workpiece surface. The molding movements accompanying considered driving forces accompany analyzed. A model dynamic formation internal cylindric part has been developed. unique one as it occurs due concentrated force whose application varies radial axial directions relative part. Thus, described by with discrete right-hand side. This proposed be simulated Dirac delta functions linear time variables using method regularization specific features discussion. These peculiar have conventional methods integrating correspondent nonlinear longitudinal lateral vibrations analytical dependencies these obtained based initial data. Using Maple software, 3D changes torsion angle depending different output values constructed. conducted researches will allow consider torsional fluctuations especially actual long details, such sleeves hydraulic cylinders, details drilling mechanisms others.