Vol 5, No 1 (2011)
- Year: 2011
- Articles: 59
- URL: https://journals.rcsi.science/2074-0530/issue/view/3816
Articles
REShENIEMezhdunarodnoy nauchno-tekhnicheskoy konferentsii AAI «Avtomobile- i traktorostroenie v Rossii: prioritety razvitiya i podgotovka kadrov» i rasshirennogo zasedaniya Ekspertnogo soveta po voprosam avtomobil'noy promyshlennosti Komiteta po promyshlennosti Gosudarstvennoy Dumy RF
Izvestiya MGTU MAMI. 2011;5(1):7-14
7-14
Research and comparative strength analysis of car wheels rims with five-and fifteen-degree coupling shelves
Abstract
The article contains a solution to the problem of determining the stress-strain state of the car wheel rims with five-and fifteen-degree coupling shelves by the finite element method. The authors used a finite element in the form of a short circular truncated cone, the most fully considering the specifics of design, consisting of shells of revolution with dramatically changing the stiffness and stress. The conclusions about the benefits of tubeless tires, trucks, buses and trains design wheel with a rim having a fifteen-degree coupling shelves, both in terms of use, and from the point of view of strength.
Izvestiya MGTU MAMI. 2011;5(1):15-22
15-22
Improvement in the method of integral force diagrams for evaluating controllability and stability of the car
Abstract
The article describes the technique for evaluation of motor vehicles on the criteria of controllability and stability on the stage of its design. The technique allows solving of the problem of designing and finishing wheel vehicles. In the process of solving the problem the authors built force diagram for the examined vehicle under various road conditions.
Izvestiya MGTU MAMI. 2011;5(1):22-26
22-26
Improvement of the stability of the tractor within the units with front mounting
Abstract
The article describes the importance and challenges of machine-tractor units with front mounting. The authors presented calculation scheme of the front-mounted unit with a device that enhances the stability of the machine-tractor system with a continuous tillage.
Izvestiya MGTU MAMI. 2011;5(1):26-31
26-31
31-36
Effect of power racks in the inter-turbine nozzle of the two-shaft gas turbine engine to uneven flow at the entrance to the power-turbine
Abstract
The article examines the results of mathematical modeling of gas flow in the stage of power turbine of the two-shaft regenerative gas turbine engine. The authors showed a significant effect of power racks in inter-turbine nozzle of the two-shaft gas turbine engine on the effectiveness of power turbine.
Izvestiya MGTU MAMI. 2011;5(1):36-40
36-40
The research of the fracture process of positive electrodes of lead acid batteries
Abstract
The article describes the results of theoretical and experimental studies of fracture of lead acid battery positive electrodes and the regularities of changes in operational performance of their work depending on the design features, modes of operation and service life.
Izvestiya MGTU MAMI. 2011;5(1):40-46
40-46
Features of composite armour design
Abstract
The article examines the design of protection composite armour panel. This panel consists of two parts. The first part is a layer of cylindrical shape with crushing ceramics elements. The second part is a metal plate. The metal plate is a place for crushing elements. This protection panel is used for bullet protection of a car.
Izvestiya MGTU MAMI. 2011;5(1):46-51
46-51
The structure of the automatic adaptive control of multi-drive vehicle continuously variable transmission
Abstract
The article based on the results of optimization analysis of opportunities to improve efficiency articulated truck by activation its trailing link. The author proposes to develop the structure of the automatic adaptive control mode of the transmission of a multi-drive vehicle.
Izvestiya MGTU MAMI. 2011;5(1):51-59
51-59
Classifier of design developments in the field of transportation design
Abstract
The article describes the proposed classifier, which allows you to determine if a specific vehicle design project belongs to concept-art, concepts, or to industrial designs. The classifier is based on two axes - the horizontal axis considers the factors that the designer guided in the development of object shapes, and the vertical axis evaluates the object and its underlying concept in terms of level of science and economic feasibility. Based on this there are refined definitions of concept-art, concept and industrial design.
Izvestiya MGTU MAMI. 2011;5(1):59-67
59-67
Plasma-chemical technology of preparation of air-fuel mixture for engine operation on various motor fuel
Abstract
The experimental researches of a new adaptive system plasma-chemical managements of processes of preparation air-fuel mixtures and burning of fuel in combustion chamber conducted on Russian serial engines in the laboratories of Institute of Engineering Physics, allow to draw a conclusion on opportunity of operation of internal combustion engine on various liquid motor fuels, including kerosene and diesel fuel.
Izvestiya MGTU MAMI. 2011;5(1):67-70
67-70
Rational control laws asynchronous electric traction
Abstract
The paper considers the optimal control laws for asynchronous traction electric motors to minimize various types of losses, minimize consumption of active and reactive power, maximum overload capacity. The authors established that the joint management of the maximum torque and minimum total losses in the motor is most efficient traction control law for asynchronous traction electric motors.
Izvestiya MGTU MAMI. 2011;5(1):70-76
70-76
Results of tests of domestic and foreign tires for small appliances
Abstract
Tha article describes the results of experimental studies of characteristics of the three tire models used in ATV on multi-functional testbench. The authors give the estimation of stiffness parameters of tires for various internal pressures. Investigated in detail their traction characteristics of hard and deformable terrains.
Izvestiya MGTU MAMI. 2011;5(1):76-82
76-82
Influence of a leading mode wheel rolling on formation of basic surface of movement
Abstract
The article examines the influence of flat wheel movement in leading mode on formation of basic surface of movement. On the basis of the developed mathematical model the transfer function considering communication of output and input parameters, and also peak-frequency and phase-response characteristics of movement of the system wheel - supporting surface is defined. Work is executed within the limits of realization Scientific and pedagogical personnel of innovative Russia.
Izvestiya MGTU MAMI. 2011;5(1):82-87
82-87
Relation between the moments of inertia of the leading and driven parts of the composite flywheel with a torsional damper
Abstract
This article considers the results of investigation of the effect of parameters of the torsional damper of a composite flywheel on the amplitude of torque on the primary shaft of a gearbox. It is shown that it is reasonable to install a torsional damper with minimal rigidity.
Izvestiya MGTU MAMI. 2011;5(1):87-90
87-90
90-96
Investigation of the kinetic mechanism of nitrogen oxidation in an automotive engine with stratified mixing
Abstract
The authors proposed the method of calculation, which allows to determine the local formation of nitrogen oxides in the combustion chamber of automotive gasoline engine with internal mixture formation for the modes with laminar organization of the charge. Heterogeneity of sharply stratified mixture the workspace of the combustion chamber is divided on the path of the flame propagation into areas with different (localized) air-fuel ratio. For Volkswagen AUX-type engine test calculations conducted, which results revealed that outcome of nitrogen oxides from the combustion of a stratified mixture is 2,2 times reduced in comparison with the traditional version of uniform homogeneous mixture. Discrepancy between calculated and experimental results does not exceed 8%, thus confirming the adequacy of a satisfactory calculation method.
Izvestiya MGTU MAMI. 2011;5(1):96-106
96-106
Gain factor of vacuum brake booster
Abstract
Tha author shows the influence of the vacuum brake booster static characteristics on gain factor. There are dependences for determining the parameters of the static characteristics of the vacuum brake booster, gain factor cinsidering nonlinearities of the static characteristic.
Izvestiya MGTU MAMI. 2011;5(1):106-111
106-111
Organization of adaptive automatic control systems of wheeled and tracked vehicles
Abstract
The article considers the problem and principles of construction of on-board information-management systems of transport vehicles. The authors stated issues of organization of adaptive control systems, diagnostics and motion control of wheeled and tracked vehicles.
Izvestiya MGTU MAMI. 2011;5(1):111-116
111-116
Hybrid electric vehicle development with mathematical simulation software application
Abstract
The article deals with mathematical modeling in the development of vehicles with hybrid power plants. When designing a vehicle one of the major challenges facing developers is the most complete project development before building of prototypes. Properly constructed mathematical model can closely approximate simulation results to real tests. Working with a mathematical model, an engineer can test a car with various units and aggregates, which is almost impossible when dealing with real systems and units.
Izvestiya MGTU MAMI. 2011;5(1):116-120
116-120
Features of controllable clutch operation in the energy-power unit of a hybrid vehicle
Abstract
The article deals with the combined power systems of the parallel-series layout for trucks and buses. The authors considered the operation of controlled friction clutches within combined power systems and defined basic technical requirements for them.
Izvestiya MGTU MAMI. 2011;5(1):120-126
120-126
127-132
Choice of the most rational circuit of a cold profile rolling of teeth
Abstract
The authors considered the circuits of a cold profile rolling by one, two and three smooth rollers with lateral or longitudinal feed movement. It is displayed that longitudinal feed movement ensures smaller errors of working than lateral feed movement.
Izvestiya MGTU MAMI. 2011;5(1):132-136
132-136
136-138
Development of the combined treatment technology of non-ground non-ferrous metals based on implementation of no-wear effect
Abstract
The article considers experimental studies of the combined method of broaching by the tool with regular microgeometry surface under conditions of physical realization of the fundamental no-wear effect of Garkunov-Kragelsky. The authors determined the optimal concentration of oil-soluble county metal-clad nanostructured additives Valena.
Izvestiya MGTU MAMI. 2011;5(1):139-144
139-144
Methods of estimating effectiveness of safety events of potentially hazardous objects by structural analysis of the function a dangerous condition
Abstract
The article considers mathematical methods for estimating the effectiveness of safety of potentially hazardous objects in the solution of multi-parameter optimization problems. The developed method involves a system of indicators that can automate the process of decision-making by quantifying the effectiveness of planned activities both in terms of prevention of accidents and cost parameters, which significantly reduces the complexity of solving multi-parameter optimization problems using iterative methods.
Izvestiya MGTU MAMI. 2011;5(1):145-152
145-152
Features of modeling of specialist courses with regard to security requirements of production processes
Abstract
The article based on an analysis of job-related injuries considers the urgency of the problem of improving the system of training specialists of enterprises with regard to security requirements. Some features of the formalization of training programs for professionals in the automotive industry as ergatic systems.Tha authors stated the problem of optimizing of training program for specialist and its mathematical model.
Izvestiya MGTU MAMI. 2011;5(1):152-159
152-159
Comparative analysis of methods for cutting process calculating (to development of analytical method for cutting processes calculating)
Abstract
This article presents the comparative analysis of methods for cutting process calculating. The known solutions and methods of calculations a chip formation are considered, on their basis comparative calculations of the cutting force are made. It is noticed that the greatest capacity decisions based on the energy method of the analysis using the extreme positions of deformation mechanics. By this method L. D. Olenin analyzed the most general case of cutting, namely the oblique cutting by the tool with a blunt cutting edge, the physical equations for calculation of all major process parameters are received. The decision considers strain hardening material, the real value of contact friction, and also the power spent on the plastic fracture associated with the formation of new surfaces. It is emphasized that all equations are physical. It allows to recommend them as a basis for developing methods for calculating the cutting processes by the tool with any shape and geometry of a cutting part.
Izvestiya MGTU MAMI. 2011;5(1):159-169
159-169
Quality control on the basis of qualimetric images
Abstract
The article reviews qualimetric images constructing technique in application to the techware quality control. The introduced method is new for the techware quality control. Qualimetric image is a geometric model constructed with various quality rates folding techniques. Techware quality control on the basis of qualimetric images is aimed to detect the shortcomings of the technical item being evaluated and to improve its construction. As compared with traditional quality control methods the introduced technique is simple and time-saving.
Izvestiya MGTU MAMI. 2011;5(1):169-174
169-174
174-177
177-184
Theoretical analysis of the process of electrochemical engraving of aerodynamic lows
Abstract
The article considers the theoretical analysis of the formation of aerodynamic lows based on the model of ideal electrochemical formation. Identified forms of error due to the mechanism of material removal, and the possibility of managing their values by choosing the parameters of the regime of electrolysis.
Izvestiya MGTU MAMI. 2011;5(1):184-188
184-188
Structural modeling and classification of methods of electrochemical machining
Abstract
The article considers the analysis of models used to describe the electrochemical machining. The authors present the structural formula describing numerous ways of electrochemical machining, which were a base for classification of methods and processing techniques.
Izvestiya MGTU MAMI. 2011;5(1):188-193
188-193
Complex geometrical control of ball bearings rings on a coordinate-measuring machine
Abstract
This paper describes a method for complex control of geometrical parameters of ball bearings rings by means of coordinate measuring machines instead of specialized tools used on enterprises of bearing industry. The results of these experiments suggest the possibility of such control by means of coordinate measuring machines.
Izvestiya MGTU MAMI. 2011;5(1):193-198
193-198
Automatic assessment of condition of cutting tools on multipurpose machining centers
Abstract
The article considers the problems of evaluation of operability of cutting tools, used for multipurpose machining centers. The use of such systems allows to make automatic replacement of the cutting tool in proper time, ensuring the implementation of an automatic cycle of the machine.
Izvestiya MGTU MAMI. 2011;5(1):198-202
198-202
202-204
204-209
Demagnetization factor of granular magnetic material (filter array) as a channel bundle of magnetization
Abstract
The article identifies and analyzes the data of demagnetizing factor of different (by relative length) samples of granular media (sphere filling) and the cores of an effective channel of magnetization in the chain of balls. The authors give the corresponding experimental and describing them phenomenological dependencies of the demagnetizing factor.
Izvestiya MGTU MAMI. 2011;5(1):210-216
210-216
The Hertzian problem for the ring layer of the optional thickness subject to friction forces in the contact area
Abstract
The paper presents a problem-solving procedure for the contact interaction of solid cylinder with elastic ring layer, coating the contact parallel hole in the rigid body. It is supposed that the radial contact pressure varies according to the cosine law, and the friction forces in the contact area vary in proportion to radial contact pressures. The authors defines explicitly the dependence of contact area size on the resultant load and cogging performance, which appears to be very useful for engineering practice.
Izvestiya MGTU MAMI. 2011;5(1):217-221
217-221
Supervision of new phenomena in a flow-pattern of viscous liquid
Abstract
After the exact decision of the equations of movement of a viscous liquid (the equations of Navier-Stokes) under condition of the established current and non compressible liquids it has been revealed that only limited number of lines can appear as the real currents trajectories. This number includes direct lines, concentric circles and some spirals, axis symmetrical currents and currents at which the whirlwind of speed is constant (or equal to zero). It is essential that the established flow of a sphere or the cylinder is impossible, since trajectories of such current are not present among the specified ones. For revealing of sphere flow features, the uniform movement observation was carried out (both single spheres of different size and rigidly connected ones). These spheres formed a figure similar to the single «dumbbells» Or doubled at right angle to two «dumbbells». Experiences have found out the fact of a spontaneous twisting of spheres and «dumbbells» With the speed of a circular motion proportional to linear speed of spheres in motionless water of lake. Thus the twisting occurred always if there was no initial indignation, only counter-clockwise as at movement of spheres in directions the north-south, and the east-West, and upwards-downwards that proves that on rotation of spheres rotation of the Earth cannot render influence.
Izvestiya MGTU MAMI. 2011;5(1):221-227
221-227
Problem versions of the theories of elastoplastic deforming of materials at composite loading
Abstract
The paper examines the mathematical models of elastoplastic deforming are reviewed on the basis of the theory of processes of plastic deformation developed by V.G Zubtchaninov and individual version of unelasticity theory of V.S. Bondar. The original positions and equations of these theories of elastoplastic deforming of materials are resulted as systems of differential equations, that the realization of analytical investigations of legitimacies of elastoplastic deforming of materials allows at composite loading on planar trajectories of deformations.
Izvestiya MGTU MAMI. 2011;5(1):227-231
227-231
The problem of the flutter of a plate of variable thickness in an improved and supplemented setting
Abstract
The problem of stability in the supersonic gas flow of the plate of variable thickness, which forms a part of the surface of a thin gusset, was approached in the linear setting. The plate is freely supported along the edges, the velocity vector of the flow is directed along the axis of the gusset. The critical speed for different values was calculated.
Izvestiya MGTU MAMI. 2011;5(1):231-234
231-234
On the issue of time speed
Abstract
On the basis of almost constant ratio between duration of consecutive geological epoch, which is approximately equal to two, and on the basis of assumptions that change of a level of development of the organic world on the Earth for each epoch is the same, the author makes a conclusion that speed of development of organic matter on the Earth for the last two billion years can be described with indicative (or exponential curve) dependence. This exponent can be used for the description of not only geological epochs, but also for shorter time intervals, in particular, for dividing of Quaternary into stone, bronze and iron periods.
Izvestiya MGTU MAMI. 2011;5(1):234-242
234-242
Information support of the restructuring process of engineering enterprise
Abstract
The restructuring process of engineering company involves multifaceted tasks that require a large amount of credible information. In compliance with this, the paper examines the development of the information system that might give an opportunity to provide informational support of the restructuring of engineering enterprise.
Izvestiya MGTU MAMI. 2011;5(1):243-247
243-247
247-253
253-257
An integrated approach to building of sustainable development management under transition to a postindustrial society
Abstract
Building of management system is a key element in achieving high economic results for any business entity, and therefore it is very important to select its basic controlled elements. The paper presents the analysis of basic components of management system for sustainable development of the national economy. This components must be balanced with the transition to a postindustrial society.
Izvestiya MGTU MAMI. 2011;5(1):257-262
257-262
Formation and evaluation of transparency (rating of the investment security)
Abstract
The paper examines the problems of formation and adequate estimation of the transparency of economic subjects. As one of the tools for solving these problems it is offered to use a method of scoring models. It is also shown that application of scoring models can impact considerably the building of an adequate rating of investment reliability. Also the analysis of the basic difficulties of application for scoring models in Russia is carried out, and the basic levels of formation of a transparency in the economic environment are allocated.
Izvestiya MGTU MAMI. 2011;5(1):262-266
262-266
Application of technology benchmarking to improve competitiveness of the tractor industry
Abstract
The paper examines benchmarking strategy and the opportunities for using sample matching technique to increase the competitive ability of tractor construction industry. The current state and prospects of development of national tractor industry are described, competitive advantages of Russian and imported agricultural equipment are studied. The paper describes the advantages of applying of benchmarking technique to increasing the competitive ability of tractor industry production.
Izvestiya MGTU MAMI. 2011;5(1):266-269
266-269
Distortions in Russian market economy
Abstract
Positive dynamics of industrial production in the real sector of economy from 2004 to mid-2008 was affected by crisis in the period of active development of the economy. The paper gives a substantiation of adverse events that caused the destructive processes in the economy, which led to a fall of the main macroeconomic indicators.
Izvestiya MGTU MAMI. 2011;5(1):270-275
270-275
275-280
280-286
286-289
On the issue a new model of development of language skills at non-linguistic university
Abstract
The article considers the conceptual, organizational and technological aspects of foreign language training. It carries the list of methods and ways of teaching foreign languages. It is noted that these methods can be employed to serve the purpose of targeted communicative and cognitive development of foreign language learners. This process reinforces students' personality progress.
Izvestiya MGTU MAMI. 2011;5(1):290-295
290-295
Expert subjectivism accounting method at quality estimation
Abstract
This paper describes a method allowing to take into account the subjectivism of experts while estimating the quality of technical products. Subjectivism in the quality estimation is perceived as the influence of external environment described by the errors of 1-st and 2-nd kind. We show that subjectivity can not be accurately assessed based on the classical (two-dimensional) measurement logic. More accurate are the calculations based on four-digit logic of measurements, in which besides judgments like «true statement» and «true negation», there are two additional ones: «false allegation» and «false negation».
Izvestiya MGTU MAMI. 2011;5(1):295-303
295-303
Regularities of wrestler's constitution
Abstract
The study is aimed to identify qualitative components of body composition of stronger wrestlers of the country, allowing to determine the state of fitness of athletes in different periods of training, to develop the scale of individual assessment and quantitative control of body composition at different stages of training of the strongest athletes.
Izvestiya MGTU MAMI. 2011;5(1):303-306
303-306
Adaptive and methodical principles of swimming course at the initial stage
Abstract
The paper reviews the basic principles of adaptation to the aquatic environment in swimming training at the initial stage. The author describes in detail the system of preparatory exercises, and also considers specific exercises for teaching "Backstroke" and "Breaststroke.
Izvestiya MGTU MAMI. 2011;5(1):307-310
307-310
310-314
Current trends in car diagnostics and its influence on the teaching process
Abstract
Contemporary methods of car diagnostics and diagnostics equipment have been developed rapidly. So it is necessary to improve proper curriculums in order to upgrade students' qualification. This article reviews the experience of «Automotive electrical equipment» department (Moscow State University MAMI) and «Academy of Automotive Technologies». Also, the paper examines the requirements for experts in automobile diagnostics.
Izvestiya MGTU MAMI. 2011;5(1):314-318
314-318