A method has been developed for straightening and strengthening cylindrical non‑rigid parts by rolling with smooth plates. In the first stage, localized straightening of the workpiece is performed, the quality of which depends on the shape of the lower plate. Modeling was used to determine the influence of the shape of the leading section of the lower plate on the stress–strain state of the workpiece. It is shown that a lower plate with a curved central section provides more efficient straightening of the workpiece and preserves the shape of the cross section.
The paper presents the results of the development and implementation of issues that determine the aspects of the formation of digital development of production sites for technical quality control in automotive production.
The possibility of increasing the starting altitude of gas-turbine engines on the basis of new ignition system designs is considered. The dynamics of a new capacitive ignition system with successive discharges in a semiconductor spark plug is described. The equations for the discharge chain of a storage capacitor are solved, taking account of nonlinearity of the spark discharges. On that basis, an analytical computer model of the discharge process is developed for a single storage capacitor. Experiments confirm the validity of the model.
The influence of the number of redundant links in a hinge linkage mechanism on the support reaction when loaded with torque is shown. It is established that energy costs during the production cycle can be reduced and machine efficiency can be increased by reducing the number of redundant links. An algorithm for partial elimination of redundant links is developed.
The study considers the application of disc couplings in helicopter transmissions. Fatigue strength calculations for the discs of a four-bolt coupling are developed, and the results are compared with finite element method analysis and international catalog data. It is demonstrated that the proposed method provides high calculation accuracy. Recommendations for the design of the considered couplings are provided.
