bluuebunny/crossref_metadata_2025_split huggingface dataset:
Method of roadholding control of the vehicle of category M 1 under operating conditions
Authors: Lysenko A V , Fedotov A I , Tikhov-Tinnikov D A 
Published: November 2019

Abstract
The article presents the results of the study aimed at improving the safety of motor vehicles (hereinafter - vehicle) under operating conditions. The estimation of indicators of vehicle stability is made by controlling the parameters characterizing change of the trajectory of the vehicle under the action of a lateral force when crossing a single irregularity. The results of the study are presented in the form of graphs and functional dependences. Using the revealed functional dependences reflecting the effects of the technical condition of the vehicle shock absorbers with the parameters, characterizing the change in its movement trajectory under the action of a lateral force, when crossing a single irregularity, a method for controlling the vehicle road holding of M1category was devised.
Enhancement of fuel consumption regulation for city buses in the Russian Federation
Authors: Ilyanov S V , Borisov G V 
Published: November 2019

Abstract
The stages of the development of fuel consumption regulation for vehicles in the USSR and in the Russian Federation are shown, and the main concepts of the research into fuel consumption regulation for buses are described. The paper considers mathematical models to predict fuel consumption for vehicles with regard to high-speed movement modes, and determines fuel consumption for city buses.
The research into the rolling radius of a wheel when dealing with rollers of a roller tester
Authors: Yan’kov O S , Kamnev A V , Sherstenev S S 
Published: November 2019

Abstract
The paper focuses on one of the factors that significantly affect the occurrence of errors in the measurement of traction qualities of the car on the roller tester with two pairs of support rollers. It is hypothesized that the value of the rolling radius is significantly influenced by factors such as: the displacement of the wheel a relative to the symmetry plane of the support rollers of the tester, the load on the wheel and the air pressure of the pt
in the tire. The change of these factors changes dramatically the value of the rolling radii rk01
and rk02
– wheel rolling radii in the driven mode. The authors propose a method for determining the rolling radius of the wheel and present the study results. The functional dependences obtained in the course of the experimental study were correctly approximated by equations, which allows one to perform calculations of the rolling radii rk01
and rk02
on two cylindrical support surfaces of the tester, taking into account the load on the wheel, its displacement a and the tire air pressure pt
.
On impact of vehicle headlights contamination with products of road chemical deicing agents upon pedestrian visibility on unlit roads
Authors: Gromalova V O , Fedotov A I , Gergenov S M , Zedgenizov V G , Neskoromnykh V V 
Published: November 2019

Abstract
The goal is to determine consistent patterns that characterize the impact of vehicle headlamps contamination caused by products of chemical deicing agents treatment (PCDAT) used on the roads on the driver’s ability to see pedestrians on unlit roads. The analysis of theoretical works devoted to the impact of vehicle headlamps contamination with PCDAT upon their lighting the road was carried out. The authors conducted experimental studies of the process of contaminating vehicle headlights with PCDAT used on roads in winter under the real traffic conditions as well as measurements of luminous intensity of the contaminated headlights. Experimental studies of a pedestrian’s visibility on the side of a dark unlit road under the conditions of headlights contaminated with PCDAT were carried out. The authors developed the procedure of experimental studies to measure the distance of pedestrian visibility on a dark road with passing and driving beam headlights. The patterns that characterize the impact of vehicle headlamps contamination caused by PCDAT upon the driver’s ability to see pedestrians on unlit roads were determined. The results of the experiments are presented as tables, graphs and equations reflecting the new data. They relate to the consistent patterns of the impact of vehicle headlamps contamination caused by PCDAT on the driver’s ability to see pedestrians on an unlit road side in winter. The graphs allow analyzing the influence of vehicle headlamps contamination with PCDAT upon the driver’s ability to see pedestrians on the side of unlit roads in winter.
Method for determining the shock absorber effectiveness in the vehicle suspension to ensure its active and operational safety
Authors: Ryabov I M , Pozdeev A V , Erontaev V V , Danilov S V , Omarova Z K , Kovalev A M , Silchenkov D D 
Published: November 2019

Abstract
The article is devoted to the development of a new method for determining the shock absorber effectiveness in the vehicle’s suspension on a vibration stand with vibrating plates, which has greater accuracy and functionality compared to the already known method. The use of the new method will make it possible to reduce the risk of accidents and improve road safety with its widespread introduction.
Improved method for calculating performance parameters of vehicles before conclusion of a cargo transportation contract
Authors: Markelova T V , Vitvitskiy E E , Kh Tolebaeva A 
Published: November 2019

Abstract
Fulfillment of contractual obligations for cargo transportation, as shown by the results of practical observations, can be hindered by inaccurate or incomplete knowledge of features of cargo transportation by road transport in cities. These drawbacks in preparation of contracts for cargo transportation may cause a situation where the carrier assumes obligations inherently impossible in specific operating conditions. This can lead to unexpected freight charges.
Evaluating reliability of municipal public transport operation in the Russian Federation cities
Authors: Yu Mikhailov A , Sharov M I , Levashev A G , Butuzova A B , Ovchinnikova N I 
Published: November 2019

Abstract
The article presents the results of a study of municipal public passenger transport routes operation reliability. For the first time in Russian practice, a range of Travel Time and Buffer indices values is identified based on route networks of two different cities. A scale to evaluate route reliability levels is proposed.
Minimization of resource costs, improving the environmental and operational safety of urban road transport using braking energy recovery systems
Authors: Ryabov I M , Shiryaev S A , Kovalev A M , Rayushkina A A , Danilov S V , Yusupov Yu G , Omarova Z K 
Published: November 2019

Abstract
The article assesses the cost minimization, as well as the environmental and operational safety of urban road transport in the Russian Federation. It is clear that the most reliable and promising systems for the recovery of car braking energy are systems equipped with a pneumo-hydraulic accumulator. Pneumo-hydraulic braking energy recovery systems can reduce fuel costs and the emission of harmful substances more than 2 times.
Diagnostics of piston space tightness by pressure change in engine casing under dynamic loading
Authors: Safonov A V , Vertey M L , Syrbakov A P , Shnitkov G V , Krivtsov S N , Berezhnov N N 
Published: November 2019

Abstract
One of the shortcomings of the method of determination of piston space tightness state by crankcase gases flow is high error. Primarily, it relates to the fact that when crankcase gas flow changes, such negative effect as the pulsation of crankcase gases appears. The value (magnitude) of pulsation of different engines varies greatly, and so does the error of the method. The diagnostics method of combustion engines CPG by the change of engine crankcase gases state parameter is discussed in the work. Theoretical substantiation and experimental testing of the proposed method are carried out.
Ensuring road safety on the basis of engineering-psychological evaluation of drivers labour
Authors: Zharov S , Vasilev V , Ovsyannikov V , Deneko M. 
Published: November 2019

Abstract
The analysis of the causes for the vehicle drivers’ faults is realized. It is established that the most significant cause of erroneous actions is a number of faults, caused by the unique feature task, as well as characteristics of the reduced information. This circumstance determines the use of engineering psychology methods. The engineering and psychological evaluation of the truck driver depending on the vehicle speed and the driving mode (overtaking the “leader” from the course and transition to the driving mode after the “leader”) is realized. These studies allow us to obtain the dependence of the average speed of information processing SL and the total complexity indicator of the SD algorithm on the movement speed. Recommendations on improvement of the driver’s labour organization which decrease the faults probability and increase the traffic safety are formulated.
Creation of optimal warehouse of spare parts with minimum cost and maximum fail-safety
Authors: Malkin V S , Kravtsova E A , Turbin I V , Popova L I 
Published: November 2019

Abstract
In this article we present the method of creation of spare parts warehouse, conditions for ensuring the best reliability of warehouse with lowest total cost of spare parts storage. The method is based on Poisson-law distribution of probability of consumption of each part in a given period of time. The calculation program was developed for use on a personal computer.
Calculation and experimental assessment of passive safety for special buses on truck chassis, taking into account the influence of operating temperature conditions
Authors: Vashurin A S , Orlov L N , Trusov A P , Chegurov M K 
Published: November 2019

Abstract
The problem of reducing the severity of accidents is one of the most important. About 30% of accidents with serious consequences are those involving buses. One of the most dangerous types of bus accidents is overturning. The power structure of the body of multi-passenger vehicles are subject to the requirements regulated by the UNECE Regulations No.66. A separate specific group consists of shift buses on the chassis of trucks, designed for operation in harsh natural and climatic conditions in areas with an under-developed road network. It is known that, depending on the type, nature and structure, structural materials have different strength characteristics at a given temperature. The strength characteristics of the materials used in the construction of bodies have a primary impact on the level of passive safety of buses. Therefore, there is an urgent task of assessing passive safety of this type of buses in the entire temperature range of their operation. The present article presents some experimental dependences of the strength material characteristics used in bodies on the temperature. A detailed finite element model-specific for this class of body buses from sandwich panels is shown. Some characteristics of this type body simulation are also discussed. Results of the study of passive safety of a shift bus with a body of sandwich panels in the temperature range of the bus operation are obtained. The necessity of assessing the passive safety in the entire temperature range of operation of this specific category of buses is shown.
Coordinate model of product basing in the technological process of assembling in mechanical engineering
Authors: Ahatov R H , Safonov M V 
Published: November 2019

Abstract
Nowadays, the automated assembly of a product uses its coordinate model, which is represented by the coordinates of some set of discrete points associated with this product. These points are used, for example, to control the spatial position of the product and to control the positioning of its assembly. The selection of structure and position of these discrete points is carried out after construction of the scheme of product basing is done, thus they are indirect technological bases of a product. The article suggests using discrete points connected with elements of product design as the indirect technological bases which are setting the scheme of a product basing.
Friction welding with stirring of aluminium alloys AMg-5
Authors: Balanovsky A E , Grechneva M V , Tyurin N O , Khusanov A I 
Published: November 2019

Abstract
The results of friction-stirring welding with stirring are presented on the example of the aluminum alloy AMg-5. The technological process on the experimental installation is briefly described. Defects arising in the process of friction stirring welding are assessed. Main stages of friction welding technological process are singled out. In the course of researches it is established that during the process the tool rotation speed and feed speed are combined in such a way that an asymmetric metal flow is obtained. Welding parameters and the size of the tool in the FSW process have a decisive influence on the total torque, which determines the need for clamping equipment and tool lifecycle. It is shown that the total torque and torque components from different parts of the tool at different welding parameters and size of the tool change slightly depending on the welding speed, but the total torque remains constant.
Conditional optimization of geometric parameters of aircraft hydraulic system elements
Authors: Demidov A I , Bobarika I O , Gusev I N 
Published: November 2019

Abstract
The article describes the method of selecting the optimal geometric parameters of the hydraulic system of the aircraft. The minimum weight of the system and the minimum power consumption of the power supply are chosen as the optimal criteria. There is a mathematical model providing effective flow distribution in any branched hydraulic system. Target functions and all equations are obtained in general form.
Experimental research of cutting forces at finishing processing of machine components by elastic polymer-abrasive circles
Authors: Dimov Yu V , Podashev D B 
Published: November 2019

Abstract
This article presents the results of experimental studies of forces arising from the interaction of elastic polymer-abrasive wheel with the treated surface. The dependences of normal and tangential components of cutting force on the speed, tool deformation and feed are established. Cutting forces directly influence the removal rate, roughness of the processed surface, temperature in the cutting zone and residual stresses in the surface layer.
Methodology of the formalized approach of the automated construction of the manufacturing route of a mechanical engineering product
Authors: Govorkov A S , Fokin I V , Lavrentyeva M V , Karlina Yu I 
Published: November 2019

Abstract
The research refers to the field of automation of technological preparation of production in mechanical engineering. There is a concept of technological operations selection at manufacturing of a standard component of an airframe of an airplane glider on the basis an image of a product and objects’ classifiers of an industrial environment. Presentation of the objects of the production environment and their communication are performed in the presented theoretical and multiplicity model. The development of technological processes is considered; 3D models of the part are used in the process of TP design. The concept of the technique of automated construction of the manufacturing route on the basis of dependencies between the objects of the production environment “KE-TO-STO-Equipment” is presented.
Perspective development of diagnostic systems of aircraft structures and units
Authors: Gushchin S V , Polonsky A P 
Published: November 2019

Abstract
The article deals with information-diagnostic systems of detection of defects and malfunctions as applied to aircraft structures and units. Methods. Analysis of modern methods of nondestructive testing is carried out. It is suggested to use the combined diagnostics of aircraft structures and systems with the use of vibrometry in combination with the determination of the appearance of metal particles in the oil, their quantity and size. The possibility of using acoustic emission is considered. Results. The article compares the accuracy and reliability of the inspection of aircraft parts, assemblies and systems by different methods. Conclusion. We have drawn conclusions about the prospects of the proposed method of diagnostics. It is shown that trained neural networks are able to provide information about the presence of defects, their size and location when working in the software of information-diagnostic systems.
Development of the mathematical model of dynamic interaction in the vibrating technological equipment
Authors: Kuznetzov N K , Eliseev A V , Eliseev S. V. 
Published: November 2019

Abstract
The article is devoted to the topical problem of choosing the main parameters of vibrating technological machines used in many technological processes, including the aviation industry. It is shown that the solution of this problem is complicated by the need to create a spatial structure of the vibrating field, which is found, for example, in the vibrating devices designed for oriented placement of rivets in the container (perforated glass) before anodizing, by reporting the last simultaneous vibrations in the vertical and horizontal planes. For the solution of this and similar problems the article offers the method of construction of the mathematical models reflecting features of dynamic interaction of a working environment with vibrating surfaces of technological machines, allowing to choose parameters of a vibrating field by means of structural mathematical modeling.
Development of a computer aided design system for assembly equipment of MC-21 aircraft
Authors: Lavrentieva M V , Chimitov P E , Govorkov A S 
Published: November 2019

Abstract
The article considers how to use computer-aided design systems in modern “digital production” for the development of standard elements of assembly devices for the assembly of components of MS-21 aircraft. It describes the initial data and the most significant factors determining the architecture of the developed system. An example of an assembly device frame describes a software algorithm capable of replacing the designer’s work.
Development of digital manufacturing technologies for frame and casing parts
Authors: Pashkov A E , Yu Malashchenko A , Pashkov A A , Bogdanov K V , Kryuchkin A V 
Published: November 2019

Abstract
The purpose of the study is to develop basic approaches to digital models of cross-cutting production of frame and casing parts in order to forecast stress-strain behavior and change of a part form at all production stages. The proposed method covers stage-by-stage modeling of part production including machining, shaping (levelling) and face hardening using mechanical characteristics of a material, technological residual stress and initial shape. This approach in combination with equipment under control will allow optimizing machining conditions and achieving the required accuracy of parts and maximum capacity without pilot-scale works. The use of developed technique will make it possible to increase the production efficiency of parts due to time minimization of finishing operations and cost reduction for preproduction for the launch of new products.
Mechanization of forming and levelling of frame and casing parts
Authors: Pashkov A E , Makaruk A A 
Published: November 2019

Abstract
The machining of parts reinforced with ribs may lead to deformations expressed by two-axis bending and twisting. An effective method to eliminate such deviations is rolling, which unlike pressing, excludes cracking of aluminum alloys [1-3]. The developed set of manual rolling tool allows processing ribs and blades of a part to receive deformation in two planes. The development of levelling technology that includes mechanized rolling unit and software for automated calculation of process parameters of rolling seems quite promising.
Service life testing of composite material
Authors: Sturov A A , Chashhin N S , Ivanov Y N 
Published: November 2019

Abstract
The study aims to determine the effect of a “delamination” defect on the service life of carbon fiber reinforced polymer (CFRP) specimens and specimens that have been repaired. The tests were performed using an EHF-EV101K2-04N-1E universal testing machine, and ultrasonic flaw detection was carried out using the ELISA GMIUC002-14 complex. In the study, loading ranges were selected for cyclic tests performed for defect-free, defective and repaired specimens. The tests revealed the effect of the defect and its repair on durability of CFRP products.
Control of self-excited vibrations in face milling with two-rim mill
Authors: Svinin V M , Astakhov D M 
Published: November 2019

Abstract
The paper provides an overview of self-excited vibration damping methods for face milling. The main source to maintain and develop self-excited vibrations is the mechanism of their regeneration. To suppress it, two methods are currently actively used: tools with variable tooth pitch and cutting speed modulation. A combination of these methods was used to develop a vibration-resistant face mill with two-rims provided with alternating teeth and connected with adjustable stiffness by spring. The spring also allows a variable pitch of adjacent teeth to be adjusted. During cutter operation, the elastic connection of the rims creates difference in the cutting speed of adjacent teeth, which suppresses regeneration of self-excited vibrations and decreases their amplitude. The self-excited vibration damping efficiency of the proposed mill was determined by comparing its operation with that of a conventional mill in the same conditions of roughing a steel workpiece. The dynamics of the milling machine technological system during operation of both tools was studied using a simulation method. It was found that the conventional mill cannot be used under cutting conditions accepted in the study because of increased vibrations of the technological system elements. On the contrary, a two-rim mill provides almost quiescent processing conditions at appropriate values of the elastic connection stiffness of rims and their relative angular displacement. The settings of the two-rim mill were determined with respect to a moving rim and a spindle with another rim as a dual-mass system with two degrees of freedom.
About the partnership between the United Aircraft Corporation (UAC) “Irkut” and university researchers for creating high-tech aircraft production
Authors: Veprev A A 
Published: November 2019

Abstract
The article describes the experience of partnership between the Irkutsk National Research Technical University and the Irkutsk Aviation Plant, a branch of PJSC Scientific production Corporation “Irkut”. Here are presented the results of the joint implementation of complex projects aimed at creating a number of high-tech industrial technologies throughout the entire cycle of manufacturing aircraft products in accordance with the Order of the Government of the Russian Federation of April 9, 2010 No. 219. This study presents the solutions that are ready for copying in such areas as machine processing, metal-cutting tools production, forming and setting, surface hardening, non-destructive testing, assembling and connecting, and technological production planning.