Vol 22, No 2 (2020)

The paper establishes a relationship between the indicators of plastic anisotropy (coefficient of transverse deformation) and the parameters of the structure of the material. It was also investigated the change of crystallography of the structure and anisotropy parameters on the example of rolling of commercial aluminum Al99. In general, the results of studies indicate a fairly good convergence of the calculated and experimental data, therefore the developed models of plastic flow of anisotropic material, taking into account the crystallographic orientation of the structure, adequately describe the anisotropy of the deformation characteristics of sheet materials. Crystallographic orientations contributing to an increase in the coefficients of transverse deformation are established and also leads to the creation of transverse isotropy. The conducted studies confirm the principal possibility of forming a given crystallographic structure in the sheets which provides an increase in the deformation capabilities of the material in the molding process.

The paper presents the methodology of the organization of resource-saving production systems in railway transport. A description of the existing approaches to the organization of the energy management process in Russian Railways is given. The analysis of their compliance with the ISO 50001 is presented, the advantages and disadvantages of existing methods are analyzed. The basic principles of the proposed methodology are formulated and six stages of its implementation are presented, including the study of factors affecting the use of fuel and energy resources; the study of mathematical models of the use of fuel and energy resources; ensuring effective regulation and forecasting of fuel and energy resources consumption and tasks for saving fuel and energy resources; development of scientific and methodological principles for evaluating the effectiveness of energy-saving devices on railway transport; development of the scientific foundations of a strategy for the development a resource-saving production system in railway transport; development of improved methods and tools for monitoring the use of fuel and energy resources in production processes. The proposed solutions were tested at existing railway transport facilities, the results of which showed that the implementation of the methodology improves the efficiency of operation and the quality of organization of resource-saving production systems in railway transport. In particular, the use of machine learning methods allows to increase the accuracy of mathematical models of using fuel and energy resources up to 1.8 times, the resulting discrepancy between the results of predicting the consumption of fuel and energy resources and experimental data does not exceed 5 %, and the proposed patented technical and software solutions can be used to monitoring the fuel and energy consumption. On the basis of the obtained results, a number of regulatory documents of Russian Railways have been developed, which are implemented on the railway network and are used in organization of resource-saving production systems in railway transport.

This article represents the results of designing and manufacturing a molding form with conformal cooling system. In the forming parts of molding form, conformal cooling channels optimized by the finite element method in the CAE system were implemented, providing high intensity and cooling uniformity. Construction of molding form parts was adapted to the manufacturing technology of selective laser melting (SLM) by 40Х13 powder with a grain size of 40 microns. To save powder material and reduce operating time, a cellular (lattice) structure was formed in the hollow interior of the force plunger. The outer surfaces of the fabricated parts were subjected to further machining.

The influence of nanoshpineli magnesium on the structure and properties of PTFE. Shown that these materials are characterized by high wear resistance and low friction coefficient while maintaining strain-strength characteristics. Investigated supramolecular structure of composites.

Authors of article have developed the mixture for biological cleaning and remediation of soils, polluted by oil and oil products. The mixture is consisting of a biological product, sorbent, mineral additives, seeds beans and provides complex biological impact on oil pollution due to creation to soil micro community necessary conditions for restoration and active self-cleaning of the soil. It is experimentally determined that the “Bioactivator” mixture developed by the authors is promotes to the reduction of toxicity of soil, stimulation of natural process of biodegradation of oil and effective clarification of the soil from toxic polluting substances.

The presented article analyzes the problems of organizing production in solving quality problems in the process of designing new cars.

The article proposes methods of analytical and numerical calculation of a corrugated wall under pressure. The problem statement is formulated as follows:check corrugated wall for strength and stiffness. Under normal conditions, plastic deformation should not occur in the material ofcorrugated wall, and corrugated walls should not collapse. The analytical calculation is performed by the force method, numerical -by the finite element method. The analysis and comparison of analytical and numerical solution is carried out.

In the conditions of modern technological structure, domestic industrial enterprises are focused on resource-saving organization of production, which can provide increased competitiveness and high economic efficiency. The need to restructure the organizational structure of management of industrial enterprises in accordance with development strategies in changing conditions on a scientific basis, the transition to new management standards determine the importance and relevance of the study. The design of the organizational management structure should be based on the company’s strategy. The article discusses the features of development strategies of petrochemical enterprises in the Republic of Tatarstan. The directions of reforming the organizational structure of management are considered, first of all, from the point of view of the nature of production. In this regard, we consider a functional model of the production structure of a petrochemical enterprise (for example, JSC “KVART”) by modeling based on the IDEF0 methodology. In order to achieve the strategic goal of actively developing new types of competitive products, it is proposed to design a project management center within the existing linear-functional organizational structure of enterprise management, which will ensure efficient resource allocation and improve the quality of innovative projects, strengthening its position in the Russian and foreign markets as a reliable supplier of rubber technical products.

In this article the process of repair (curing) of the cracks which arose on sectors of shovels of the nozzle device from the material ZhS6U at operation of the turbine of high pressure of the D18T engine by cutting till complete removal of a crack with the subsequent pulse laser cladding in the place of cutting is considered. Cladding was made by means of an additive wire sv-06kh15n60m15. Metalgraphic researches on places of repair as well as control of the laser cladding zone were conducted by a luminescent method.

In technological calculations of the forming processes of parts of aircraft, engines and other mechanical engineering products, the relations of the plasticity theory based on the phenomenological approach and the hypothesis of a continuous (structureless) medium, which does not include crystallographic texture parameters and crystal lattice constants, are still used. Consequently, there is no basis for a direct analysis of the formability of textured materials in specific technological operations, and most importantly, for the calculation and design of texture components effective for forming performance. The article provides a theoretical calculation of the forming limit curves (FLС) based on the modified maximum force of P. Hora and the yield criteria, which explicitly takes into account the lattice constants and orientation factors of the texture. Using the obtained model for the basic ideal crystallographic orientations characteristic for materials with a cubic crystal lattice, the forming limit curves of ultimate strains are plotted.

We are considering the problems on guidance and control for a space robot during visual checking the state of an information geostationary satellite. The robot motion control system uses a propulsion unit with 8 jet engines and pulse-width modulation of their thrust, and also a gyro moment cluster based on 4 gyrodines with digital control. Numerical results are presented that demonstrate the effectiveness of the developed guidance and control algorithms.

The article describes an automated solution for improving the quality of production planning and calculating the necessary production capacities of an enterprise using the example of a machine-building enterprise. The main parameters for the automated formation of a normative card that are involved in the formation of production plans are determined. An algorithm for obtaining the planned operational complexity of manufacturing parts based on the design and rationing of electronic technological processes has been developed.