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Main correlations in the theory of bending of thin electromagnetoelastic plates are obtained, in which complex potentials are used. Exact analytical solutions are obtained for the problems of bending an elliptical plate and an infinite plate with an elliptical hole. It is established that no electric or magnetic inductions arise in the case of a simply connected finite plate under mechanical influences, and no mechanical stresses arise under the action of inductions, despite the fact that the piezoelectric effect occurs due to deformations, displacements, and field potentials. The piezoelectric effect in the case of an infinite simply connected plate is always observed and has a significant effect on the values of bending moments. The influence of the physical and mechanical properties of materials and the geometric characteristics of holes on the values of bending moments In the case of a plate with an elliptical hole is studied.

The wear resistance of DI37-VI and EK80-VI steel is studied using a device for investigating friction. A sample made of high-carbon chromium-vanadium steel relative to pellets of MS221, VK3M, and VK6OM hard alloys on this device carries out reciprocating motion at a rate of 0.1 m/s. The base friction path is 50 km and the average temperatures of the samples are 100, 140, and 190oC. The effect of an average temperature of samples on the wear resistance of DI37-VI and EK80-VI steel is described.

This paper presents the results of an experimental study of the physical properties, microstructure, and phase composition of a TiC-NiCr ceramic-metallic compact obtained by hot pressing. It is shown that an increase in the volume fraction of the metal binder in the samples reduces the HRA hardness (from 55 to 25) and the HV300 microhardness (from 1000 to 350) of the material.

Effect of laser shock hardening on the fatigue life of an OT4-0 titanium alloy is studied. Laser hardening is carried out using a fractionally modulated Nd:YAG laser operating at a pulse repetition rate of 10 Hz. It is suggested by the analysis of the effect of various laser treatment parameters on the magnitude and distribution of residual stresses over the sample thickness that an optimal type of laser shock treatment makes it possible to create a compressive residual stress region whose depth reaches up to 1 mm and whose maximum value is 600 MPa. It is shown by the results of studying the fracture surface structure that the fatigue fracture mechanism changes, while the service life of specimens significantly increases during both low- and high-cycle fatigue after laser shock hardening.

This paper describes an investigation of plastic instability of an internally impulsively loaded thin-walled spherical pressure vessel with plastic orthotropy. In the framework of finite deformation and Hill's orthogonal anisotropic yield criterion, the vessel instability strain is derived, which includes the effects of the plastic orthotropy and strain rate.

A method for determining the empirical dependence of the rheological properties of rocks on stresses has been developed and tested in the laboratory. The results of tests of cylindrical samples of rock salt and bischofite of the Nizhnevolzhsky deposit were used to obtain strain curves under stepwise loading and develop and verified a viscoelastic model describing the change in strains over time. It has been shown that the parameters characterizing the elasticity and the viscosity of the studied rocks decrease with increasing stress. This corresponds to the successive transition from the stage of elastic deformation to the stage of decaying, steady-state, and progressive creep. It has been established that creep of bischofite manifests itself at stresses above 0.5 MPa, and the creep of rock salt at stresses above 5 MPa. In relation to the uniaxial compressive strength and maximum strains, the creep of bischofite manifests itself at a relative strain above 0.0013 and at a relative stress of 0.19, and for rock salt, these values exceed 0.11 and 0.43, respectively.

The finite element method is used to obtain solutions to problems of strength and stability of reinforced cylindrical shells made of composite material with account for the momentum and nonlinearity of their subcritical stress-strain state. The stability of a reinforced aircraft fuselage compartment made of composite material is studied under pure bending and internal pressure loading. The effect of deformation nonlinearity, stringer stiffness, and shell thickness on critical loads at which shell buckling occurs is studied.

Exact and approximate analytical solutions are compared with experimental data on the geometrically nonlinear bending of a thin elastic cantilever beam under the action of a transverse concentrated load at its free end.

Area of study - external reflexively active environment with covering of information «cloudiness of turbulent mixing» of elements-data. Subject of study - methods of arrangement of information chaos, included in the processes of generation and reception of information. The aim consists both in the development of theoretical concepts of external reflexively active environment, formed by information media, and in the elaboration of maximally plausible model of reflection of the environmental «reality» in mental «vision» of decision makers. Tasks. Generalization of the fundamental scientific presuppositions of the «knowledge» category, falling into the conceptual framework of the theory of robust stability and explaining high sensitivity of the system to changes in initial data. Structuring of information chaoscovering of the environment under study, through examination of the generation process: selection of sources of information generation; arrangement of the concepts of area of study - «reproduction of new». Determination of the nature of «information cloudiness» in accordance with offered hierarchy of information structures, revelation of their covering via the use of the apparatus, describing entity characteristics of the behavior of reception process. Formation of the matrix of connectedness of types of structural formations of «information cloudiness» and cognitive tools of reception. Methodology. Logic of the study is built on dichotomy of the «appearance» and «reality» categories. The retrospective analysis considers the development of the approaches to structuring of external environment as an early stage of reproduction of the knowledge concerning object. The existing knowledge concerning external environment is supplemented, on the one hand, by the detailed decomposition of its structural model, on the other hand, by the development of the concepts of the methods of recognition of data entered into certain «information cloudiness». The objectness of information reception is reflected by formalized structures, composing cognitive tools of the transformer of information into knowledge. Results. Information sensitivity of robust control is justified, and a hierarchical model of information structures of external reflexively active environment is built. The types of «information cloudiness», making it possible to realize typological grouping of data, are defined for each structural formation. The matrix of connectedness of structural formations is built on the grounds of: types of «information cloudiness»; cognitive tools of reception. Scientific novelty lies in formation of the methodological approach revealing logic of the study. The application of the approach makes it possible to create the reflection, maximally close to «reality», of entity characteristics of chaotic external reflexively active environment filled with uncertainty and turbulent information flows; in building a mental model of decision maker, - their «vision» through transformation of reality via processes of generation of information structures and reception of «information cloudiness», covering of structural formations, by clustering of data and formalization of structures concerning transformation of information into knowledge. Currently important line of research is aimed at reaching maximum reflection of real state of information space of external environment in the mental model of decision maker, caused by the increasing requirements applicable to quality of information and its significant influence, exercised on the effectiveness of

The economy of our country and the enterprises that make up its basis are characterized by low indicators of labor productivity. One of the ways to eliminate this problem is the widespread digitalization of processes, which allows for total fixation of all operations, optimization of processes through deep analytics, automation of basic operations, operational restructuring of the strategy for changes predicted by big data analysis systems. For a number of reasons, the processes of digitalization of production, labor relations, financial and other operations are constrained, which does not allow obtaining the necessary effect from the implementation of expensive digital transformation projects. The world of work is one of the areas of promising changes, it is in it, according to experts, that the maximum effect from the digitalization of processes and functions can be manifested, for example: personnel assessment and development, remuneration, fixation of all labor transactions. Through the analysis of constraining factors, as well as an assessment of lost profits, recommendations were formed in the work for the development of directions for the digitalization of production processes at Russian industrial enterprises