No 6(46) (2015)
BUILDING. BUILDING MATERIALS AND PRODUCTS
58-64 523
Abstract
The task about fluctuations of the cable-stayed bridge presented by a fold with absolutely rigid cross diaphragms, a pole and guys together with a regular column of the trucks moving with a constant speed is investigated by the numerical decision of system of the integrated equations of Voltaire of the first sort. On a concrete example possibility of a resonance at the movement of a column with a speed equal to the regularity step relation to the period of own form of the bridge is shown, taking into account frequency-dependent internal friction.
65-70 533
Abstract
The original production technology of the granulated heat-insulating materials on the basis of opal raw materials of regions of Ural federal district is developed and patented. High heat-insulating characteristics of new materials allow to use them for the device additional the morozozashchitnykh and the draining layers of road clothes. The results of laboratory researches of new material executed in cooperation with laboratory FAU "ROSDORNII", proving prospects of use of new materials in road construction are given in article. Additional argument in favor of introduction of new materials in road construction is possibility of potential expansion of a source of raw materials for their production in the south of the Tyumen region.
71-76 673
Abstract
The article presents the theoretical bases of interaction with mounds of peat bases. New constructions of forest roads of mobile auto-containing layers of geosynthetic materials and de-roaring elements, for use in the grounds with low bearing capacity. The calculation and conducted in accordance with the testing procedures on the test bench in the ground channel in the department of forest roads and the organization of wood removals. The construction of forest roads using the proposed technical solutions will reduce the sagging of the design in the subsoil, and does not require consciousness of any cross-decking length giving structure rigidity.
76-81 1016
Abstract
Considers the process casting polypropylene into a mold made of metallopolymers. The article presents theoretical and practical justification for the possibility of applying the formative elements of molds metallopolymers. Presents the results the simulation of casting process in the software environment and gives an analysis of the data. Are described results of the application a matrix of composite materials in a real production. Conclusions are drawn on the possibility of manufacturing the formative mold parts made of composite materials.
81-85 567
Abstract
The analysis of the accuracy of regulation height position of bases and covers runways at airports in their building regulations. Given the norms of precision altitude position Ba-ments and coatings for all types of runways of airfields: Off-tion of the actual elevation of the axis of each row of the design, the deviation of the transverse slope of each row of the design and significance of the algebraic difference (amplitude) elevations along the axis series, with a confidence level of P = 0,95 or P = 0,9. Noted disadvantages of valuation accuracy altitude position of bases and covers runways of airfields in the regulations. Proposed establishment of the technological processes at the device of their bases and covers not carry on limit, and in times standard deviation with a confidence level of P = 0,95 or P = 0,9.
MATH MODELING. SYSTEM AUTOMATION DESIGN
86-93 668
Abstract
The article presents a series of mathematical models of individual subsystems and the analysis of the simulation chain of trench excavator on the basis of which the generalized mathematical model to determine the key parameters in the design of the control device volumetric hydraulic transmission of attachments digging under a chain of trench excavator. The substantiation of criterion of efficiency of application of chain of trench excavator for the process of dissection and undermining of the pipeline.
94-101 709
Abstract
The method of a choice of the additional equipment of the internal combustion engine (ICE) cooling system is considered. The ICE cooling system is offered that realizes the fan control on the basis of the fuzzy logic controller. The controller smoothly changes the electric motor rotation frequency. For choice of the engine thermal condition stabilization device the mathematical modeling in MATLAB/Simulink/Fuzzy Logic Toolbox is used.
102-106 743
Abstract
This article analyzes the interaction of working bodies of milling machines with asphalt roads. Various methods of calculating the parameters of the milling process, the scheme vectors of the forces acting on the tooth cutter with a head and a tail milling, one-dimensional model of the oscillating system for single-tooth cutter, which operates on the cutting force. When the mathematical description of the process of interaction with the working body of the milling asphalt need to consider many changing factors necessary to create a theoretical and experimental base for scientific research in this direction.
106-111 713
Abstract
There is presented the algorithm of automation of working process of hydraulic excavator in this article, that allows to dig trenches automatically and also the design scheme of the working equipment of hydraulic excavator in the working plane.
ECONOMICS AND MANAGEMENT
112-119 776
Abstract
The article comprises the sources and the conditions of development and using of advanced technology in Russian industry. The perspective technological trends for innovative industry development are described and analysed. The special attention is paid to the necessity of the training of qualified specialists for high-technological productions. The future prospects of development and using of advanced technology in Russian industry manufacture are determined.
119-127 614
Abstract
The article describes the relevance of the study in the current state and trends of air transportation. We have established the relationship of transport services market, the labor market and the education market in the aviation sector. Air transport market is characterized by ups and dips in traffic. Changing of transportation structure under the influence of external factors are significant. The article illustrates the air transport services market statistics and changes in the market of aviation personnel. We gave an overview of the aviation market research and conclusions of Boeing company, and systematized factors on labor market trends depending of the air transport market.
128-132 680
Abstract
The questions assess the effectiveness of the repair control mechanisms through the tender system. We construct a generalized diagram of the control system repairs and maintenance fund management model, determined by the scheme of subsystem distribution of investments in the economic object. The constructed model, is designed to distribute investment projects in the market of contractors, suppliers of construction and installation works in such a way as to achieve the performance to minimize investment risk and the cost of the project implementation.
133-138 666
Abstract
The article is devoted to the study of the processes taking place in the trucking industry of Russia and developed countries of the world. It analyzes the statistical information in the field of road transport, considers the changes in Russian legislation in the sphere of transport, as well as analytical data on road transport, confirming the author's conclusions.
151-156 524
Abstract
This article describes the dependence of the operating costs of the change of quality indicators of functioning infrastructure. Analyzed the major factors influencing the decline in the cost of transportation. And revealed the necessity of applying the methods of individual expenditure rates, consolidated expenditure rates, as well as methods for determining the factors of influence, depending on changes in the cost of qualitative use of the rolling stock. On the basis of the research the author proposes a comprehensive model to increase the efficiency of infrastructure.
156-163 464
Abstract
In den vergangenen Jahrzehnten siedelten mehrere Hunderttausende von Deutschstämmigen aus Osteuropa nach Deutschland aus. Unter ihnen bilden die Aussiedler und Aussiedlerinnen aus den Nachfolgestaaten der ehemaligen Sowjetunion die größte Gruppe. Die Berufsbiographie der Spätaussiedler ist durch die Aussiedlung in besonderer Weise geprägt. Die Umsiedlung bedeutet für sie grundsätzlich einen zwangsläufigen beruflichen Abstieg. Im Mittelpunkt des Beitrages steht der berufliche Werdegang der Spätaussiedlerinnen und den damit verbundenen Auswirkungen auf die Identitäts- und Persönlichkeitsentwicklungen.
TRANSPORTATION. TRANSPORT AND TECHNOLOGICAL MACHINES
7-13 682
Abstract
The authors suggest methods of calculation of the intermediate cycle cycle a traffic light based on the basic expert calculation. Focus on: the permissibility of completion of journey of the intersection to vehicles (TC), whose drivers when you turn on forbidding signal does not have the technical ability to stay in the field, regulated by the requirements of traffic Regulations; the dependence of the location of conflict points between vehicle flows, which is the final passage of the intersection and traffic flow beginners movement when switched on allowing signal of the traffic light, on the order of phases of work traffic lights object; practical recommendations on the choice of mutual correlation of time intervals between signals prohibiting «yellow» and «red with yellow». Proposed test calculation, correcting the result.
13-17 634
Abstract
It describes different technologies obtained by cold forming of hollow parts with conical surfaces of solid and tubular billets, analyzed the advantages and disadvantages of certain methods of deformation. The results of mathematical modeling using a specialized system of finite-element Super Forge and the method of forming the upper assessment process hollow parts with internal conical surface. Conclusions on the possibility of reducing the forces of deformation due to changes in construction equipment.
18-23 755
Abstract
The article considers the effects of disabling the cylinder to change the characteristics of the engine earth-moving machines in various operating modes, calculated the diesel engines with subsequent analysis of their performance under different algorithms disable cylinders, evaluated the possibility of using additional flywheel to increase the technological parameters of the machine during operation.
24-28 637
Abstract
The review of designs of modern graders of domestic and foreign production is provided in this article, new material on this subject is generalized. Technical characteristics of graders are given, their distinctive features are described. The special attention is paid to the technical solutions connected with modernization of designs of a dump of the grader. Ways of improvement of designs of working body of the grader are designated, the main tendencies of development of designs of modern graders of domestic and foreign production are revealed.
29-31 807
Abstract
This article discusses the issues related to the problem of the development of a gearbox with variable gear ratio. As a prototype adopted gear shift (CAT) vehicles. Noted the complexity of the gear shift mechanism data CAT. Proved the mechanism of a gear change, the current regardless of the direction of rotation of the drive wheel.
32-37 639
Abstract
In this article application of algorithm of selection of rational regime parameters of vibration skating rinks taking into account the maximum values of vibration accelerations of mass of the condensed soil is considered. Dependence for finding of the mass of the condensed soil limited to values of vibration accelerations below which deformation of soil doesn't happen is defined that earlier wasn't considered at determination of mass of the condensed soil. Specification of values of mass of the condensed soil will allow to select more rational regime parameters of vibration skating rinks that will allow to increase their productivity.
38-44 571
Abstract
The article describes the method of managing the loading of the transport network of the city by optimizing the composition of the traffic flow and use of a new criterion - the load factor of the road network (UDS) from various types of passenger transport, including individual. Task offload UDS is solved by accelerating the development of the municipal transport of different sizes available for small-beater populations (MH). This will increase the volume of passenger transport in compliance with the standards of transport service.
44-50 585
Abstract
Held on the training ground and experimental studies of dynamic characteristics of multi-purpose tracked vehicles under various schemes of hydraulic shock absorbers suspension in different conditions of movement in the terrain is defined as hydraulic shock absorbers and without them. The levels of influence of hydraulic shock absorbers on the dynamic characteristics of multi-purpose tracked vehicles. A comparison of the results of the kinematic excitation of the undercarriage when driving on rough terrain with absorbers and without them.
50-57 713
Abstract
The studies were obtained depending the angle of deflection of the bridge crane hoist rope from the vertical, and the rate of change of the angle of the acceleration of time and the accelerated movement of the point of suspension of cargo. These dependencies can be used to extinguish the pendulum oscillation of the load being moved by overhead crane, when braking in the final moment of moving goods.
ISSN 2071-7296 (Print)
ISSN 2658-5626 (Online)
ISSN 2658-5626 (Online)