The article considers one of the methods for reducing and stabilization residual technological stresses in low-rigid parts which relates to the field of thermo-force processing with simultaneous straightening of the workpiece. The study’s results of the force modeling taking into account the influence of temperature during thermo-force processing of stainless steel samples are presented. The torsion moment as an additional force load in combination with the tensile force is used. Dependencies and results of research are presented for the stress state using the combined action of torsion moment and axial force at different temperatures taking into account relaxation processing. Recommendations are given for improving existing and developing new devices and technologies in the field of thermal-force processing of low-rigid shaft-type parts.

We propose a mathematical model of the changes occurring in the geometrical properties of the deuterium-tritium layer on the laser target in the process of its insertion into the reactor working chamber. The model is a parabolic equation of general form in spherical coordinates with nonlinear boundary conditions on a moving boundary. We show that under physically justified assumptions this problem may be regarded as a Stefan problem for a singularly perturbed parabolic equation. The first terms of the solution series are written out. Numerical calculations of the fuel layer degradation time are presented for a real target.

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This report describes the variants of deformational cladding operation of flat surfaces. The adaptive control method is proposed for compensation of wear influence of the flexible tool and maintenance of contact force at necessary level. The dependency relations for optimization of a choice of time of tool readjustment or replacement are given.

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