The article includes the brief information on the application suites Stabcon 2.0. With Stabcon the authors made the statement and solution of the task of optimization of two-axle vehicle suspension performance in different road conditions. The characteristics of the design parameters of the suspension control two-axle vehicle are described in the article.
The article is dedicated to study of the influence of wheel gyro effect of on forced oscillation of a passenger car, generated by steady-state and moment disbalance of wheels.
There is a necessity to develop the functional requirements to the automatic system for vehicle accident identification in the automated systems of emergency response to the accident. The list of accident types, which are subject to automatic identification is substantiated. Proposals on the design and use of some sensors, in particular, vehicle element deformation sensors are presented.
The article includes the results of the calculated and experimental study of the thermal state of the rotary frame heat exchanger with conical and cylindrical heat transfer elements. Calculations were carried out in the program complex ANSYS CFX, and the experiment on the regenerative gas turbine engine of GAZ Automotive Plant.
The article presents a developed mathematical model of steady direct motion of the articulated trucks with the active trailer that allows to estimate the losses in transmission, as well as the results of its analysis from the point of view of efficiency of the train.
The paper proposes a method for the synthesis of a direct torque control of asynchronous electric drives with separate control of the magnetic flow and electromagnetic torque. The authors show the results of simulation of asynchronous electric drive, advantages of the developed motor control system: ease of construction, high dynamic quality, small fluctuations of electromagnetic torque.
For improvement quality calculations units and details transmission car is necessary to know loading operating modes of transmission car. The article presents information about variant of the transmission loading control with use of information received with controller of engine management.
The paper presents a method modeling of dynamics of manual automotive transmissions, taking into account two phases of slip and stick of frictional clutch.
The article considers the results of investigation of the effect on the forced frequencies of the transmission of torsional vibration damper arrangement. It is shown that it is advisable to install a damper of torsional vibrations in the flywheel.
The article presents the results of a comparative analysis of energy capacity of automotive generator rotors with electromagnetic excitation and excitation from permanent magnets.
The article considers development of a model for a case of arc discharge in a gas stream. The authors examine the traditional geometry of arc plasma device in which arc stabilisation is carried out by a shelf.
The article is devoted to a technique of designing of generating installations, storage batteries and starter electric motors of vehicles, including electromachine converters of various type and appointment in the conditions of real operation. The technique developed by authors is based on use of a method of the imitating modeling, allowing to break maintenance the car into various events (dispersal, the braking, the established movement, parking on idling turns, braking by the engine etc.) on the basis of events and the experimental drive cycles received by authors on the basis of operational researches of various types of cars the algorithm of operation is made. On the basis of algorithm during any concrete moment of time it is possible to calculate frequency of rotation of a rotor of the generator and a current of loading of electric consumers. Results of operational tests confirm adequacy of developed by authors mathematical models of electrical supply system.
The article discusses the use of hydraulic fan for car engine cooling, and includes schematic dolutions.
Analyzes the problematic issues associated with the prospect of development of domestic automotive gasoline engines with internal mixing, which stimulate the need for search tools and new technical solutions that are acceptable for domestic engines. Noted the unacceptability of a direct copying of foreign decisions in domestic practice, not only because of the high financial costs for their implementation, but given the lack of technology and the necessary materials for their production. As an alternative, we propose a method that allows for minimal financial costs quickly solve an actual problem of domestic engine - the creation of the Russian automotive gasoline engine of a new generation with internal mixing. The method is based on the use of hydrogen as a chemical reagent that promotes improvement of ecological and economic qualities of the engine.
The paper presents results of research of mathematical model of a linear motion of a four-wheel-drive vehicle with individual controllable drive from the electric drivetrain, which allows to evaluate traction-power performance of the vehicle under different operating conditions.
The article considers a software package that allows to perform simulation of the design in SolidWorks program and to calculate the spatial dimension chains. Functionality of the software system is illustrated by specific examples.
On the basis of the study it is revealed that the formation of machining error for non-rigid parts of the hollow cylinder type depends on the errors of an installation, static and dynamic errors in setting the technological system of combined machining and surface plastic deformation.
Authors study technologies of grinding sealing surfaces of pipe fitting saddles. The aim of research is to reduce complexity and improve the quality of the repair by mechanization of finishing stages of this process. In the present work mechanization is exercised due mobile grinding and lapping devices, the authors offered appropriate theoretical model of the kinematic process of microcutting for the circular motion of the oscillating plane-grinding or lapping disks.
The paper considers the characteristics of nano-sized powders of carbon and chromium on the processes of charge preparation and compaction of powder steels.
The article discusses the influence of mechanical treatment on changes of surface energy of metal parts and the associated strength of the adhesive joints. The authors show the data of experimental studies on measurements of the surface energy of samples after various types of machining.
The article considers influence of non-uniformity of allowance of machined workpieces and the fluctuation of values of cutting depth and, hence, forces of cutting on elastic displacement of technological system and output parameters of accuracy of the equipment on manufacturing of parts of «rotation body» type.
The article considers the approaches to the problem of optimization of laser processing for decision of actual tasks of technology of mechanical engineering. The authors developed the technique of optimization of the laser processing technology, based on synergetic method of an estimation of basic parameters. Optimization results on basis of recurrence relationship allow formulating of requirements for technological efficiency of the laser processing.
The authors present the experimental and estimated technique of non-destructive method of X-ray diffractometry as well as the results of investigation of residual stresses on cold forming of metals. The article describes the results of estimation of axisymmetric part quality by the criterion of residual stresses when manufacturing them by multistage rotary forming of sheet workieces.
The paper deals with the problem of accurate determining the area of contact of a tool with a workpiece in the processe of smoothing of outer cylindrical surfaces. As a tool for turning a plate were considered the standard geometry plates (SNMG). The article describes in detail the technique of simulation of contact interaction, the results of the analytical data processing.
The experimental stand is developed for registration of reflection and transparence coefficients in visible and IR diapasons, characteristic for radiant components of thermal fluxes for combustion chambers of diesel engines, turbine blades and a surface of aero-space apparatuses. Distinctive feature of the stand is a spectral photometric sphere for influence indemnification of scattering indicatrix (phase function). Estimations of scattering and absorption indexes of experimental and model samples of a semitransparent ceramic material on the base of stabilized zirconium dioxide for probing laser radiation at the fixed wavelengths 0,63 µm; 1,15 µm; 3,39 µm were carried out.
The paper describes a method of processing of helical end mills shaped surfaces of straight profile. The authors describe the possibility of processing the contoured surface of the helical cutter with a given profile by means of mathematical and computer modeling.
The papers considers the links of the dendritic structure of metal solidifying in a two-phase zone, with a diffusion overcooling in it, through the use cellular models of two-phase zone. Considered theoretically the experimental results obtained by studying the connection of the diffusion overcooling in a two-zone crystallized alloy with a diffusion overcooling in it. The analysis is based on the use of cellular models of two-phase zone and the numerical solution of the equation. A satisfactory agreement of the change in the diffusion of overcooling in a two-phase zone, depending on its temperature (measured from the liquidus temperature of the alloy). Confirmed the theoretically derived relation between the parameter setting of the dendritic structure with a maximum diffusion overcooling of the alloy at a given cooling rate.
The paper deals with a new mathematical formulation of the problem of determining the parameters of cylindrical surfaces on the results of their measurements on coordinate measuring machines. Minimization function is supplemented by deviations of derived parameters from their nominal values, so the problem becomes well-conditioned for measurement of cylindrical surfaces in small areas.
The work describes the process of threading of high-length threads using tangential heads, in which the length is not limited by the width of thread part of rollers, unlike normal thread rolling. It is achieved by different geometry of rollers, special positioning of them in relation to a part, and combination of feed rates in different directions.
The article presents the results of analytical study of mechanics of formation of cylindrical holes in solid material by a rotating tool. The analysis is performed by the energy method using the extreme positions of deformation mechanics at following assumptions. The processed material is considered isotropic, having strain hardening, that corresponds to the conditions of full cold deformation. In addition, it is assumed that the contact friction submits to the Coulomb law, that is proportional to the normal pressure at the contact, the hardening curve on a dedicated section approximated by a linear function. Two variants of cutting are investigated: the tool with the drill web, that has a negative rake, and the tool with the corrected drill web. It is shown that the traditional drill with a drill web is not an effective tool. Optimization of geometry of a drill web provides repeated reduction of axial force. The physical equations for calculation of power parameters of drilling based on the actual geometry of a cutting part of the tool, and also its central part named a drill web, are given.
The authors present the results on the stress distribution in a longitudinally strained three-layered elastic plane with the two identical vertically placed circular holes, received by using a variational finite-difference procedure for solving plane elastic problems for the holed rectangular domains. The paper examines the effects of layer elastic constants on the level of stresses around the holes.
Based on the behavior of structural materials under cyclic elastic-plastic deformation and low cycle fatigue life assessment the authors established a system of mathematical modeling of cyclic loading of structures using finite elements. The paper considers the examples of solutions of test problems and real structures.
The authors proposed the model of elastoplastic material at nonisothermal cyclic loading. The paper deals with comparison of calculations of cyclic elastoplastic stress-strain curve and experimental results of steel Х18Н9 at hard loading and high temperatures. Model of low cycle fatigue based on accumulated plastic strain is compared with Manson formula at high temperatures.
The paper deals with the institute of contemporary Russian political consultants. The authors examined types of political consulting and proposed their own classification of political consultants in Russia. The special relevance of the work lies in the fact that the authors analyzed the problem through the prism of poorly studied phenomenon of political consumerism.
Russia has not yet overcome the transition from state socialism to capitalism and went to the civilized way of building a post-industrial society.
The article examines the risks of the commercialization of innovation, conditioned by the state of the infrastructure. The analysis of the state in greatest critical to the success of innovative projects, infrastructure elements of the commercialization process of innovations. Based on the analysis, the authors formulate proposals to reduce risk by developing the necessary infrastructure in the innovation process.
The article considers intangible actives of the organization as competitive advantages in the conditions of postindustrial development.
Sustaining a high level of competitiveness and innovation activity can be achieved through the modernization and mobilization of the existing potential of the country. The article analyzes the scientific and technological structures, and suggests measures of state support to improve the efficiency of industrial enterprises on innovation basis.
The paper presents an analysis of some factors affecting the competitiveness of the Russian automotive industry sector. The basic development strategy of the automotive industry in Russia, the main directions of state policy in shaping the domestic car market with foreign partners, foreign investment and innovation. One reason for the low competitiveness of Russian car is problems in engineering education, the low level of funding and setting priorities of research and development activities.
The article has a goal to depict connection between population settlement pattern of Russian Federation and it's regional economic state, with the help of twenties century economic theories which have been based on cumulative growth theories. Latest innovation in world trade theory as a part of economical geography, together with constant growth of cities role in global economic system, make the urban structure a very actual topic. Author also makes an attempt of systemizing the indicators of such an analyses and offering conclusions and recommendations for development of Russian regions.
The article is devoted to loanwords and their role in the modern Russian language. The author discussed the new trends connected with their using, origin and the most popular groups of Americanisms in Russian language.
The article examines socio-philosophical analysis of the problems of formation and development of information society, socio-cultural implications of the information revolution and the development of new information and communication technologies and their impact on human activities and life of modern society.
This article offers a brief analysis of the current state of the Russian automotive and road networks, interconnection of its facilities with roadside infrastructure, the exposed factors influencing the future development of roadside service. The authors suggested an approach to defining the goals and objectives to create service zones on federal highways.
It is approved that the resolution of the antinomy of naming relations is a way to improve the accuracy of scientific terminology in general.
The paper analyzes the trends affecting the design of adaptation strategies aviation industry to the environment. The authors study the activities of companies in a volatile external and internal environment. It is proposed organizational structure of the coarsened aviation enterprises. The basic principles and modalities for the strategy of adaptation are being developed.
The paper presents the method allowing to determine the moment when the company begins to work at a profit, to choose the most acceptable variant of modernization scheme and its funding.
The work is devoted to monetary policy in the Russian economy over the past two decades. The authors conduct the analysis of macroeconomic indicators for this period and assess influence of major factors on the real economy, and the economy in general. The research results may be useful in long-term planning of economic development of the national economy.
The paper considers the experiment on practical approbation of the technique, accepted in foreign practice, of training of the students of high schools on a cycle adjusting lectures-independent work-consultations-testing with reference to study of a subject "Material Science". The experimental technique is tested on two grade levels: by the students of younger courses getting base knowledge, that is necessary for the students of all specialities, and at training the students of the senior courses for the special chapters of material science with reference to their future speciality. By results of experiment the conclusion is made that it is early to enter an experimental technique into practice of training of the students of younger courses, and for the students of the senior rates the foreign technique can serve as addition to a traditional technique of teaching.
The present article deals with pass tests for determining the level of student physical preparedness and of physical skill development. A variety of application options during different periods of education or training stimulates students to improve the state of their physical activity.