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The Russian Automobile and Highway Industry Journal

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Vol 15, No 1 (2018)
View or download the full issue PDF (Russian)
https://doi.org/10.26518/2071-7296-2018-1

TRANSPORT, MINING AND BUILDING MACHINERY ENGINEERING

8-18 1169
Abstract

Introduction. The article is devoted to the metal construction optimization of the drive suspension conveyor with the suspended belt and distributed drive. The article also briefly reflects current directions of the research and development work of the conveyors with the suspended belt and distributed drive.

Materials and methods. The main attention is concentrated on the drive suspensions of the conveyor construction, on the working capacity conditions providing sufficient traction and coupling, as well as on the disadvantages of the existing roller suspensions’ construction. The research presents the original technical solution of the roller suspension, which is equipped with the individual drive of the motor reducer and also with the pressing device of the leading roller, and the main advantages of a roller suspension are also described in the article

 Results. The authors develop and present a mathematical model that allows optimizing the steel construction of the most metal-elements – load-bearing section of the drive suspension according to constructional, strength and stiffness constraints.

 Discussion. The realization of the proposed mathematical model is considered on the basic conveyor construction’s calculations of the steel construction’s stress-strain state. It is established that the basic drive suspension has the excessive strength, weight and the exceeded geometric parameters of the rods.

 Сonclusion. The conclusion about the need for multicriterion optimization of the steel drives suspension’s construction is made, as well as investigations of the configuration parameters’ influence on the massdimensional characteristics are presented.

19-29 1269
Abstract

Introduction. The article presents the improvement efficiency of fuel and economic properties of the vehicle in WLTC driving cycle by means of the main gear ratio changing.

Materials and methods. Great attention is paid to the fuel consumption determination by the numerical simulation of the moving process in the driving cycle. To illustrate this process, a continuous function of the vehicle speed and various mathematical models of the internal combustion engine characteristics – based on the classical theory, and also on the basis of experimental studies with additional account of transient modes – is formed in the research.

 Results. Therefore, the corresponding values of the mass fuel consumption and the gear shifting algorithm are proposed in the article.

 Discussion. The obtained results allow to carry out the effect of individual gear ratios’ evaluation on the fuel and economic efficiency of the vehicle in the prospective World Harmonized Driving Cycle with additional consideration of the traction and speed performance changing.

Сonclusion. It can be concluded that the calculation methods used in the research could be applied for solving the problems of complex optimization synthesis of structural and regime parameters in mechanical transmissions of modern automobiles.

29-36 866
Abstract

Introduction. A solution of the problem of moving the load to a given distance is proposed in the article with the fulfillment of the condition for complete quenching of the uncontrollable pendulum spatial oscillations for the plane pendulum dynamical system with oscillations’ damping describing the load oscillations of the bridge crane on a flexible cable suspension in a separate vertical plane.

 Materials and methods. The recalculation principle of the time dependences of the cargo rope deviation from the dependence of the vertical acceleration, speed and movement of the load suspension on the freight trolley in a separate bridge plane or the freight trolley. The kinematic restrictions on the movement of the cargo suspension point in the form of the maximum achievable accelerations, speeds of the bridge and the truck of the crane are taken into account in the research.

Results. The principle hypothesis of the swings’ superposition in the joint cargo movement of two mutually perpendicular vertical planes is confirmed with small deviation angles’ values of the load rope from the vertical position.

Discussion and conclusion. The accuracy of the superposition of the bridge crane pendulum system flat models is evaluated in the process of suppressing the spatial cargo swings. The spatial cargo movement in two mutually perpendicular vertical planes could be simulated with sufficient accuracy for practical purposes using a relatively simple flat mathematical model of the loaded bridge crane pendulum system.

36-45 991
Abstract

Introduction. The advanced technology development demands higher requirements to the physicomechanical characteristics of the polymer composite materials (PCM) widely used in general and special purpose products such as in transport and road-building. This determines the relevance and significance of the new polymer nanocomposites development on the tribotechnical purpose with high physic-mechanical and tribotechnical characteristics.

Materials and methods. The problem mentioned above is solved by means of the structural modification’s methods of the PCM polymer matrix and the technological process optimization of the composite materials’ synthesis. One of the structural modification advanced methods is the polymer matrix charging with different fillers’ types, particularly, disperse and fiber ones, and in recent years – ultradispersed and nanodimensional fillers.

 Results. The composite materials with nanodispersed fillers feature the properties significantly different from those of the materials with microand macrodispersed particles because of the high surface activity of nanodimensional particles’ fillers.

 Discussion and conclusion. The research deals with the development results and polymer nanocomposites’ investigation with polydispersed and nanodimensional fillers, their influence upon the structure and wear-resistance of the polymer composite materials based on polytetrafluorethylene.

46-54 891
Abstract

Introduction. The article considers the relevance of the subject of using vibratory compactors in the road construction field. Moreover, the shortcomings of existing unbalance exciters are revealed. In order to eliminate the drawbacks, we propose a new design of a crank-rod type vibration exciter. Therefore, the design is a new step in the development of directional oscillators, the use of which in road engineering would increase its productivity and efficiency. The main provisions, which allow to calculate energy efficiency and vibration parameters of a new exciter, are considered. The results of calculations and the dependence of the power exponent for the entire period of oscillatory motion are presented. The article proposes a new principle of designing periodic generators of directed force action. The scheme of the construction and its kinematic scheme are presented. The result of the research is to increase the energy efficiency of using vibrating compactors in road construction.

 Material and methods. A new design of a vibration exciter is presented, the dependence character of the direction of the driving force on time relative to the treated surface is revealed.

Results. Increase energy efficiency of the building materials’ processing by vibrating road rollers are given.

Discussion and conclusion. As can be seen, the proposed technical solution is a new step in the development of oscillators of directional action and their usage in road engineering, which would improve its productivity and efficiency of processing road building materials.

TRANSPORT

55-60 1521
Abstract

Introduction. Road transport remains the most dangerous form of transportation in our time. On the roads of our country about 25 thousand people are killed per year, are injured and maimed more than 250 000 people per year. In fact, every third traffic accident happens in the night time. Therefore, the question of the motor vehicles traffic’s safety increasing on winter roads continues to be relevant nowadays. The duration of the winter slipperiness’ period in Russia is 5-6 months. One way to prevent the winter slipperiness is the deicing materials’ application. While motor vehicles’ driving on the road, which is covered with anti-icing materials, the pollution of the vehicles’ external lights by anti-icing agents is happen, and this process significantly reduces the illumination of the road and the visibility of the traffic conditions in the darkness time and it also negatively affects the road safety situation.

Materials and methods. The analysis of the literary sources, the scientific works and the publications about the problem of the external lighting of the car pollution by the deicing materials, which influences on the driver’s visibility of the traffic conditions in the dark time is made in the article. In addition, the analysis of normative documents, which regulate the requirements to the condition of the operated motor vehicles in terms of the road safety is presented in this research.

Results. The modern theory of the vehicle’s operational properties does not contain the results about the illumination influence of the road headlights on the traffic safety in terms of their pollution with chemical deicing materials in dark time. Therefore, the research is aimed to identify the patterns how the lighting devices’ pollution of the vehicle by anti-icing agents influences on road illumination and visibility.

Discussion and conclusion. The question about the motor vehicles’ safety and about their operating conditions on the winter roads, which cover with the chemical anti-icing agents is urgent nowadays, because of the information lack about the regularities of the reagents’ influence on the traffic safety in dark time. For this reason, the systematic scientific research should be conducted to obtain new information of such influence.

60-69 920
Abstract

Introduction. The article determines the relevance of the scientifically sound solutions and effective tools’ development in the evaluation of the passenger companies’ performance. The author notes that these decisions should be based on the modern methodological principles for assessing the complexsystems’ performance, taking into account the specific of the transport service process and the general requirements for evaluation methods.

Materials and methods. The methods and tools of the quality management system, methods of system and the methods of structural and comparative analysis are used in the research. The main approaches to the task assessing effectiveness of the complex systems’ functioning are singled out, and their shortcomings, and the possibility of their application for the evaluation of performance in the theory of passenger motor transport are determined.

Results. The author proposes to use the index normalization method to develop a methodology for assessing the performance of passenger enterprises, where the whole set of carefully selected indicators in accordance with accepted standards is converted from absolute values to relative ones. In accordance with it, the tasks and stages of subsequent research are defined. The article presents the classification model of the basic system formation of performance indicators and the functional scheme of their grouping for the subsequent indicators’ ranking by significance within each of the four groups.

Discussion and conclusion. The author concludes that the index rationing method could be used for urban public transportation terms. Systematized enterprises’ indicators should be ranked in order of importance, first of all for the passenger, then for the department of transport, and only then for the enterprise, because efficiency in market conditions is not only a good financial result, but also the enterprise competitiveness for the quality of services and the amount of subsidies.
69-76 796
Abstract

Introduction. Diagnosis of car engines and systems is a complex and high-tech process. In fact, the simplest procedure of diagnostics’ process is the error status code determination from the electronic control memory unit by using the diagnostic scanner. However, such diagnosis could become complicated whether the fault appears, but the codes in the electronic control unit memory are absent. As a result, a vehicle diagnosis proceeds to the next expert diagnosis’ level, where only professionals could help adequately. For the correct diagnosis in this case, the specialist should be significantly experienced in this sphere and, therefore, it imposes a number of requirements to his qualification.

 Materials and methods. The method for determining the specific defects of the gasoline engines and their systems based on logical analysis of diagnostic parameters with the help of computer technology in the appropriate diagnostic complex is viewed in the article.

 Results and discussion. Incoming informative diagnostic parameters’ data from the scanner, oscilloscope and analyzer is processed by complex method, consisting of the integral indicators’ determining.

Сonclusion. Accordingly, it is proposed to calculate the integral indicator of failure based on the entered ternary system of measurements and, subsequently, to determine the specific fault of engine and its systems by its numerical value, as the result, providing the labor costs’ lowering for defects’ searching.

77-87 930
Abstract

Introduction. The aspects of improving the transportation efficiency of the enterprises’ goods by the small shipments in the cities in the operational planning phase are viewed in the article. The practice necessity in all aspects of operational planning, taking into account the features of the private cargo companies’ modern transport and the state of the economy, determines the research relevance in this sphere. 

Materials and methods. The article discusses the goods’ carriage alternatives in small consignments by several technological ways at the planning stage, i.e. the development of several possible plan variants. The considered options of the goods’ transportation, such as the simple pendulum route and more complex routes using their own vehicles and rented vehicles provided on an hourly rate are presented.

Results. The efficiency criterion of the cargo transportation, which is expressed in the maximum difference between the cost of the goods’ transportation on the pendulum with the reverse and not loaded route by own enterprises’ PBX and other ways of ATS and the cost of freight for all plan versions is proposed.

Conclusion. The fitted regression based on the efficiency criterion of the cargo transportation distance in the range of 1 to 60 km is arranged and the objectives adequacy of the operational planning process is made in the research.

CONSTRUCTION AND ARCHITECTURE

88-97 1046
Abstract

Introduction. The article presents the investigation results of the factors determining the reliability coefficients’ values of the constant load from the weight of the structures in the buildings’ and bridges’ calculation by the method of limiting states.

 Materials and methods. However, the constant load has not yet been determined due to the lack of the experimental data, the variability influence of each individual factor: the density of the material and structural dimensions on the reliability coefficients’ value. The reliability coefficients’ values of the constant load from the weight of the structures are also determined mainly by the specified reliability and the allowed variability in the structure dimensions.

Results. The probabilistic approach’s application to the reliability coefficients’ estimation on the load allows reasonably assign and reduce the calculated values of the constant loads. The application of the probabilistic method of the dispersions’ summation therefore leads to the reduction of the reliability factor for the loads of the self-weight and multi-layer bridge structures to 10%.

Discussion and conclusion. The self weight’s variation coefficient of the multilayer structures depends on the control during their manufacture and operation, so the reliability factor for the self weight loads of the multilayer structures could be significantly reduced by the established control. In order to improve the bridges’ reliability and because of the large variability in the pavement elements’ weight, especially in the asphalt-concrete layers’ weight, their normative values should be assigned with the increased security

97-105 969
Abstract

Introduction. The updated wording of the rulebooks SP apply instead of the SNiP for the road construction last time, in which the accuracy requirements of the device bases and pavements is greatly increased. To ensure high requirements to the accuracy of vertical position of the structural layers of bases and covers roads there is a need of application of modern surveying instruments (precision optical levels and electronic total stations with different accuracy).

Materials and methods. The research of the vertical position accuracy (unevenness) of the coating roads surface in IV category at the constructive layers’ device is observed with the road vehicles without an automatic system of vertical heights and with the leveling step through 10 m.

Results. The calculated statistical characteristics and parameters for the deviations’ distribution of the amplitudes on the pavements’ surface elevation, which are obtained according to the measurement results, are used on the N-3 optical level and on the TRIMBLE M3 electronic total station.

 Discussion and conclusion. The standard deviations’ values of the amplitude, which are obtained by the N-3 optical level’s usage and by the electronic total station’s usage, remain on the same accuracy order. Therefore, the usage of the electronic total stations for the accuracy ensuring is planned also on the vertical position of their bases and pavements. 

INFORMATICS, COMPUTER ENGINEERING AND MANAGEMENT

106-114 1921
Abstract

Introduction. The current stage of progress is associated with the development and implementation of intelligent systems and technologies that provide the formation of clear solutions based on fuzzy rules, fuzzy conclusion and fuzzy control. However, the classical control methods work well only with a completely deterministic control object and deterministic environment, but for fuzzy information systems and highly complex control object, fuzzy control methods are optimal.

Material and methods. Moreover, the process of decision-making by a person in the management of technological processes is modeled and simulated by a fuzzy controller with a base of rules. In recent years, “fuzzy” control has been successfully used to manage and operate a number of systems.

Discussion and results. Therefore, this article is devoted to the consideration of fuzzy logic controller’s application in management systems and existing research methods’ analysis in the field of intelligent control technologies for solving the problems of adaptation of applied models and algorithms to various objects and systems, particularly to the systems for maintaining the microclimate parameters of the building’s life support environment, and also to the basic parameters of increasing the economic efficiency of using the fuzzy logic controller in the control system.

Conclusion. Analyzed control methods based on fuzzy logic are applicable to various technological objects and systems. As a further study, it is planned to consider the issues of fuzzy control of various life support systems of a modern building. 

ECONOMIC SCIENCES

115-120 2404
Abstract

Introduction. The article considers concepts in the labor protection sphere, which, by the author’s opinion, don’t take into account the current requirements of the economic development process, including such processes as the economic recovery and the growth of the living standard of the population, which could be possible only through the working person’s factor. Thus, without solving the social problems of the working group, the economic tasks would be problematic or impossible to solve. Accordingly, wages should be paid for labor, but not only for a job attendance and such approach would be one of the main instruments for economic activity management.

Materials and methods. The collective-contractual regulation form of social and labor relations, including the labor protection sphere, develops nowadays at the stage of innovative economy transition. Therefore, the mutual interests of the employer and the employee in conditions’ improving and labor protection should become the basis for the development and solution of these problems.

Results. In addition, the definitions of certain terms in the labor protection shere are proposed in the article.

Сonclusion. It can be concluded that the term «labor protection» is determined as a social and labor relations between participants of the labor process in the safety sphere, but not as a system of organizational, technical, sanitary and other measures. 

121-132 894
Abstract

Introduction. The article considers the youth migration processes in the Omsk region, which lead to the migration security problem on Omsk territory. This process entails to the threats of the region economic development and requires adequate solution, since young people represent the most active category of the population in the vocational and labor aspect, and the main migration outflow is associated with it.

Materials and methods. However, the regional statistics’ data and the conducted research based on the youth representatives’ overall survey reflect the negative trend and parameters of youth migration security. This suggests that the main reasons for the young specialists’ outflow are the need for a higher income compared to the proposed conditions of the regional economy, and a more attractive working place in terms of their professional capabilities’ realizing.

Results. The results of the research show that the migration security problem should contribute to the attention increasing of the regional authorities to minimize the young people with higher educational outflow.

Сonclusion. Therefore, the solution of this problem by the region authorities should focus on the measures of ensuring the necessary living standard for young people, increasing wages in key economy areas and improving the social and economic conditions for the Omsk region development. 

132-139 695
Abstract

Introduction. The methodology formation of the status and the development of the production technologies at the manufacturing industry enterprises of the Russian Federation in the context of priority scientific and technological development of the Russian economy are presented in the article.
Materials and methods. The basic methodological approaches used for the research are the system and the process approaches, which are reflected in scientific and practical material of the general systems theory, also the theory of the organization and the technical and technological approaches.
Results. The scientific development concept of the production technologies at the manufacturing industry enterprises is directed to the determination of the maintenance versatility and to the multidirectivity extension of the new technologies' implementation in domestic manufacturing industry within the development priorities of the Russian scientific and technical complex. Within the practical implementation ofthe production technologiesdevelopment concept the organizational business case capable model is proposed for providing the achievement of the technological orientation influence of the manufacturing industry enter prise and for the acceptable version of the organizational decision's choice.
Conclusion. The main directions of the received results' usage would be the adjustment of the state programs' contents towards subprogrammes (sections) adding for modernization according to the new technological directions; the actions' separation directed to support the research in the digital and additive production sphere, the robotic technology and new production technologies would be implemented.

140-149 1015
Abstract

Introduction. The article discusses the questions of regulation of migration processes. The research material is presented basing on the study of population migration expectations of Omsk region,which is carried out by the author of the article.

Materials and methods. The empirical analysis provides the definition of the methodological prerequisites for the model regulation development. The author identifies three approaches that become the basis for the following model: systemic, institutional and program budgeting. According to the theoretical analysis the necessity and possibility of the regional migration policy development are proved. The justification for the term “regulation” usage instead of the concept “control”, because of the institutional approach and migration expectations, which are based on informal institutions, is presented. Additionally, the thesis about the correlation of objective and subjective in the formation of migration expectations is developed in the research.

Results. Distinguishing the concept of “cause” and “factors”, the author clarifies the classification of migration factors and highlights the political, social, economic and geographical environment. The article shows that the political environment is more related to parameters of external region’s position. The research reveals the important factor of migration in conditions of excessive differentiation of regions development, which is distant from the central regions of the Russian Federation and the cultural and recreational values, tourism opportunities, recreation in such cities are more available than in Omsk region. As the result, the research shows the economic environment depends from the external conditions (the economic policy of the country, the stage of development of Russian economy, the tax policy, etc.) and internal conditions (policy on enterprises, supporting industries, subsidies, grant support, investment attractiveness of the region, etc.).Therefore, economic environment of the region significantly influences on the Federal policy, especially on the regulation of migration processes based on the characteristics of the external and internal environment.

Conclusion. The author concludes that there are needs to provide additional indicators of the effectiveness of migration management in the region, which would significantly help to monitor the attractiveness of the region as a whole and as separate directions.

149-157 872
Abstract

Introduction. First of all, the professional management of the financial and economic activities of the organization assumes the usage of analytical tools that makes it possible to come up with a comprehensive approach to the problem of determining the problems of the economic entity’s functioning. However, the standard analysis of the organization’s financial situation does not cover the whole range of issues needed to identify problem areas for revenue generation, gross profit and sales profit for each assortment of products sold (services). At the same time, there are the specific business processes in the assortment plane of study that ultimately form the financials of the commercial organization.

Materials and methods. The operational analysis as the part of the organization’s financial analysis allows not only to identify the problem but also to model the most acceptable variant of doing business and building business processes which analyze the organization activities.

Results. Therefore, the analysis based on the operational analysis’ standard indicators, such as the operating leverage, the gross profit ratio, allows to identify promising and unpromising activities even when negative financial results are achieved, it also provides the opportunity to assess the property base structure and the property restructuring necessity.

Сonclusion. For unprofitable activities, it is proposed to use the restrictions on the numerical value of the operating leverage that assesses the ratio of the financials’ changing, depending on the set volumes’ changing of the service sales.



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ISSN 2071-7296 (Print)
ISSN 2658-5626 (Online)