The following work looked into sensitive analysis. Sensitive analysis is used to gather some data of analysed problem and further to reduce the time required to run a simulation. The work explains importance of the tool in field of mechanics engineering. The work briefly outline applications of the tool in industries. Also I-beam analysis was done to better understand influence of sensitive analysis. The results illustrated that by reducing nodes in the geometry of the I-beam the output values stay the same, but too much reduction will lead to incorrect results. The comparison of the two methods also took a place in this work, to see the correlations and discrepancy of the problem.

Keywords: sensitive analysis, time reduction, finite element, I-beam, simulation

This work investigates squeal propensity problem arising during normal braking. Narrative of this work is suggesting complex eigenvalues method to found out tendency of squeal propensity. The work also provides a brief introduction of complex eigenvalues method and literature review of the problem, which shows study done in this field by other investigators. Frequencies and instability measurements were calculated. Afterward standard deviations were plot to found out whether squeal will be reduced or amplified, within chosen parameters. The results illustrated that by increasing the coefficient of friction the instability measurement will increase and reduce when hydraulic pressure increased.

Keywords: complex eigenvalues, squeal propensity, standard deviation, brake system, squeal reduction, instability measurements

This article presents the results of an experimental study of the deep cooling of natural gas combustion products in a condensation heat exchanger of a waste heat exchanger in a boiler house No. 12 at the Federal State Budgetary Educational Institution of Higher Education "National Research Ogarev Mordovia State University". The heat scheme of the boiler house with the flue gas heat exchanger provides the maximum continuous cooling mode. The study identified the factors that have the greatest impact on the efficiency of the heat exchanger-utilizer.With short-term operation of the boiler in the spring and autumn periods, the efficiency is more than 3%.

Keywords: burner, combustion mode optimization, heat utilizer, boiler room thermal circuit, boiler unit, flue gases, condensation, heat exchanger, cogeneration mode, cooled gases

A program has been developed that allows to evaluate the adhesion of paint coatings by means of analyzing images of the surface of coatings with delamination’s from the substrate to be protected. The program is written in Kotlin using JavaFX platform and is focused on tests carried out by the method of lattice cuts within the conditions of paint and varnish production. Through the work the evaluation of the area of the coating detachment from the surface to be protected is being held and the obtained result is scored by points according to the method of lattice cuts. The use of the program does not require a large computing power of the computer and reduces the time for obtaining the calculating results for one sample from 20 minutes to 3 seconds.

Keywords: adhesion, lacquer coatings, notch method, Kotlin language, JavaFX

This article discusses the possibility of improving the environmental situation by changing the percentage ratio of metal and fiberglass fittings produced in the direction of increasing the latter. A comparative analysis of the calculation of the slab basement of 300-mm thickness was carried out, in the construction of which reinforcement made of steel (class A-500C) - and fiberglass were used. The results of the study led to the conclusion that, due to the recycling of plastic waste to produce this innovative building material, there is great savings for the manufacturer, and to this is added an improvement in the environmental situation in general, as the amount of industrial waste on the globe decreases without using environmentally friendly methods. destruction.

Keywords: Operation and reconstruction, design, construction safety, operation, fiberglass reinforcement, construction

The article deals with the main problems of obtaining experimental data on drying liquid dispersed products. The main difficulties of using a moisture meter to obtain kinetic curves of drying difficult-to-dry liquid materials are given. On the example of lignosulfonate drying curves of samples of liquid product in different conditions are obtained. Presented that the application of the proposed method of the experiment on the moisture meter does not lead to early completion of the operation of the analysis of the drying process.

Keywords: kinetics, moisture meter, drying, moisture, solvent, evaporation, lignosulfonates

This scientific study presents an analysis of organizational conflicts, as well as problematic aspects of activity in contemporary realities. The effect of organizational conflict on the effectiveness of an individual is shown. The urgency of researching the problem of the activities of the organization’s employees in the context of organizational conflicts, as well as ways to solve them, is given The analysis of the cognitive model. As factors used to reduce tensions in a team, it was proposed to introduce factors for raising qualifications and organizational culture. These factors will influence the target factor - performance. In the course of simulation modeling, it was found that by carrying out activities to improve the skills of employees, measures to increase the level of organizational culture of employees, the organization seeks to reduce tension in the team and, as a result, there is less staff turnover.

Keywords: simulation modeling, cognitive modeling, functional structural analysis, visual analytics, conflict, organization, model, social tension

This article describes problems of ensuring the reliability of gas pipelines, one of which is connected with the construction of the North Seas on the shelf in the zone of permafrost soils, the other with the construction of long-distance gas pipelines in difficult hydrological conditions. Were analyzed the existing technical solutions in the light of the above construction conditions. Were revealed the advantages and disadvantages of the considered technologies of construction and transportation of gas are. The research identifies the main factors affecting the reliability and efficiency of design solutions for the construction of gas pipelines in areas with difficult hydrometeorological conditions.

Keywords: reliability of gas pipelines, analysis of technical solutions, complex hydrometeorological conditions, gas transportation

The following work is concentrated on the analysis of dynamic pressure distribution of a brake pad by using ANSYS software. A non-linear contact analysis of brake disc has been performed using Finite Element Method. The finite element model of disc and pads have been developed, and followed by an inclusive simulation of the contact analysis of disc brake system using ANSYS software. A detailed finite element model of a disc brake assembly was developed. Contact analysis was done to determine the pressure distribution, interfacial contact area and normal contact forces under both frictionless (μ=0) and frictional braking conditions. The influence of varying friction coefficients and the brake hydraulic pressure on squeal occurrence is examined. The results illustrated that the contact pressure distribution and the magnitude of normal contact pressures are far greater towards the leading edge of the pads comparing to the trailing edge.

Keywords: метод конечных элементов, распределение давления, контактное давление, шум, тормозная система , нелинейный контактный анализ

The article is devoted to the conditions and tasks of the methodology of adaptation and preparation of information models of buildings and structures for subsequent implementation and effective application in the system of technical operation of the building. The following issues are addressed: analysis of the use of BIM-model at the operational stage; analysis of the difficulties encountered when using unprepared BIM-model in operation; synthesis of existing and development of alternative recommendations for filling the information model with data at each stage of design and construction for subsequent use in the operation service; the study of tools that help in the preparation of BIM-model; development of algorithms that optimize the preparation of an information model for the operation of an object.

Keywords: BIM-technologies, information modeling, construction, 3D-model, virtual copy, construction

This article will analyze the effect of Gc on the propagation of cracks in glasses with different material properties. The analysis demonstrated that with decreasing Gc, the crack length will increase and, with a larger applied force, the effect of Gc on the crack propagation in the structure decreases.

Keywords: fracture mechanics, fats fracture, Gc, crack propagation, Code_Aster, Solome Meca

In this paper, the task of territorial planning of road transport enterprises is considered, taking into account modern requirements for the development of the urban environment. Methods for solving problems of territorial planning using geographic information technologies are highlighted. The work identified the factors of placement inherent in this subject area and characterized by spatial, temporal, pragmatic characteristics. Given the spatial nature of the task and the input data, it is proposed to use geoinformation modeling as an effective means of solving problems, which are based on geodata. The model of a geographic information system is presented as a combination of a model of visualization and consideration of spatial distribution factors, including sets of production rules. This model also contains a block of regulatory data that regulates the process of land use and allows us to evaluate the suitability of a particular site. The process of visual analysis is described and the main elements of the visualization model are identified. The totality of the data components of the geo-information model makes it possible to take into account heterogeneous information, conduct its complex analysis and make better decisions.

Keywords: geoinformation modeling, spatial planning, automobile transportation company, visualization, location factor

The issues of violations of the terms of delivery of goods on the railway network are considered. The main reasons for the violation of the delivery time are systematized on the example of the North Caucasian Railway. The North Caucasian Railway serves the ports of the Azov-Black Sea basin and the consignees of the Southern region. Over the past 10 years, the volume of loading of export cargoes to the ports of the Southern region has increased by more than 47%. Despite the relatively high reliability of cargo delivery, a negative trend in the increase in financial risks of the company RZD was noted. An analysis of the claim work was carried out, in connection with the violation of the delivery deadlines. The issues of speed and delivery of cargo and empty shipments at the North Caucasian Railway are considered. The main reasons for the arrival of goods with broken delivery dates were: the receipt of wagons with broken delivery dates at the joints of the road; Excessive availability of wagons to ports and port oil depots; an increase in the number of passenger trains in the summer. Mechanisms for managing the delivery time in rail transport on the basis of logistics and information technologies have been developed. Expansion of the zone of logistics management of railways traffic to ports based on the use of information systems that allow monitoring of operational work, identify problems of the road network, will reduce the load on the infrastructure of the port roads, fulfill all budgetary targets, and obtain additional profit.

Keywords: Analysis, delivery time, reliability of delivery, railway transport, seaport, financial risk, transport services, competitiveness

The possibility of getting natrium-carboxymethylcellulose with given viscosity from different raw materials for oil industry is shown in the paper. The regression model, connecting rheological characteristics viscosity with parameters of the technological process is proposed. The program for IDE Microsoft Visual Studio medium which may be used for calculating Na-CMC synthesis parameters, providing the given in the frames of the technological process viscosity value, is developed.

Keywords: natrium-carboxymethylcellulose, rheology, viscosity, etherification, alkalinity

The article presents the results of a study of activated sludge, which purifies domestic wastewater from nitrogen compounds under conditions of low concentrations of dissolved oxygen in the bioreactor (concentration at the level of 0.2-0.7 mg / dm3). The studies were carried out in laboratory and semi-production conditions on the models of circulating aeration facilities. Research methods included optical, electron and fluorescence microscopy, laser diffraction method and real-time polymerase chain reaction method. As a result of research, the composition and condition of the main indicator microorganisms of activated sludge, the structure of floccules of activated sludge, including the distribution of sizes of floccules depending on various technological conditions of the process, the cause of filamentous swelling of activated sludge in cases of disturbance of the system’s stability, as well as the number of functional bacteria genes archaea associated with the processes of nitrification and denitrification. Separately, research was carried out on the sedimentation properties of activated sludge, which includes the determination of sedimentation rates of activated sludge under the conditions of the mutual influence of floccules and biofloculation potential. Studies were performed both for experimental activated sludge, working with simultaneous nitrification and denitrification with low concentrations of dissolved oxygen, and for the control nitrifying activated sludge, taken from existing treatment plants operating according to the traditional technological scheme of denitrienitrification.

Keywords: nitrification, denitrification, activated sludge, aerotank, oxidation ditch, biological treatment, domestic wastewater, low oxygen treatment method, energy saving, resource saving, ecology