×

You are using an outdated browser Internet Explorer. It does not support some functions of the site.

Recommend that you install one of the following browsers: Firefox, Opera or Chrome.

Contacts:

+7 961 270-60-01
ivdon3@bk.ru

      The article describes the best ways spline interpolation trajectories of angular movement in the key points for solving motion control rd to the prediction of the external load. As benchmarks we examine the accuracy of the approximation of the drive and the complexity of calculation of coefficients of splines.

    Keywords: Trajectory, Lagrange splines, splines Ferguson, interpolation

  • Using graph theory to mathematical modeling of the plant parts

    The article is devoted to the mathematical modeling of the plant`s development. The graph theory is used to model the plant objects with different types of branching and its growth.

    Keywords: model, the plant object, stem, directed graph

  • The effect of GFRP reinforcement on the strength of normal sections in flexural concrete elements

    In this article considered the questions related to the strength of normal sections in reinforced concrete beams, in which steel reinforcement is completely or partially replaced by a fiberglass rod. It was established that the strength of such beams is less, but the strain is significantly higher compared to the traditional reinforced. Calculating with current standards dramatically overstates theoretical bearing capacity of these beams with composite reinforcement

    Keywords: concrete, reinforced concrete, strength, normal sections, steel, fiberglass reinforcement GFRP, composite materials, research

  • The deformability of concrete beams reinforced with GFRP and combined (hybrid) reinforcement

    In this article considered the questions related to how the deformability is influenced in concrete beams, in which steel reinforcement replaced with fiberglass GFRP or a combination (hybrid). The latter is very important, as the current standards do not account the increased in strength of composite reinforcement, whereas its elasticity modulus is lower than the elasticity modulus of steel reinforcement.

    Keywords: concrete, reinforced concrete, strength, deformability, steel, fiberglass reinforcement GFRP, composite, the modulus of elasticity, deflection

  • Stress-tension research of global tube system using a construction method without lifting

    The main questions of tehnology and mechanisation process of construction of global system is considered. Movement of prepared connected tube system according the project makes by shifting of initiative sections.

    Keywords: tube system, contact zone, self-construction, prospectivity.

  • Specification of a technique of definition of a charge of drop ablation in a working zone at barbotage electrolits

    In article questions of improvement of a technique and theoretical bases of electrocatching with reference to problems of fight against drop ablation in a working zone in the conditions of galvanic production are considered.

    Keywords: electrocatching, drop ablation, working zone, barbotage, charge, drop

  • Ways and means of decrease in noise loadings on the civil engineering enterprisies

    In article it is disscused ways of decrease in noise and realization of actions for decrease in professional risk of workers construction industry enterprises working under the influence of high levels of noise.

    Keywords: industrial nois, professional risks,labor protection

      Semicars, as is known, are a universal rolling stock. For today in RZD and in transport HIGH SCHOOLS of the country works of research character on regulation and operation optimization by a universal rolling stock are actively conducted. In article a task in view on optimum control empty cars of various patterns of ownership with use of a transport problem.

    Keywords: Park of semicars, cars own involved (ВСП), empty a traffic volume, the First cargo company (ПГК), the Second cargo company (ВГК), and the basic plan

  • Calculation of elastic-plastic torsion absorber

    Currently most used energy absorbers can be represented classic spring-damper scheme in which the binding is the presence of the elastic work item and damper. Applied to seysmoudarnomu works best security systems installations are systems that do not have elastic elements. For hard metals, which are material for the work items absorber characterized by the appearance of a tooth during the deformation strength. For the calculation of the power characteristics of the work item should be modeled phenomenon associated with the formation of the yield drop. Modeling of the phenomenon of this article.

    Keywords: Dynamic loading, uprugoplastichesky deformation, deformation chart, power absorption, tooth strength

  • Rationale for the design features energopoglotiteley seismic structures

    Currently actively promote seismic associated with the use of special devices, so-called energopoglotiteley. This paper shows that the design energopoglotiteley advisable to make so that the work item had torsional strain. These EPA bdut have maximum energy absorption with minimal weight. Designs of EPA.

    Keywords: Dynamic loading, uprugoplastichesky deformation, deformation chart, power absorption

  • A lateral refraction in traverse network

    In the article the assessment of influence of a lateral refraction on angular measurements in traverse network is made. The conclusion is drawn on possibility of significant distortions of angular measurements in these networks because of refraction. Recommendations about reduction of influence of a lateral refraction on angular measurements in traverse network are made

    Keywords: Refraction, Influence, Measurements, Traverse, Network, Distortions

  • Increase of system effectiveness of two - stage transportation: on an example of management of a solid municipal waste

    The model of increase of efficiency of the created system of transportation of a municipal waste is presented. Need for carrying out modeling and the actions connected with reorganization of system, because of possible increase in total expenses is proved at shift of positions of reloading stations of rather optimum points owing to local conditions of the territory of municipality.

    Keywords: a solid municipal waste, technological process of transportation, two - stage transportation

  • Algorithm for calculation of reflection on the basis of geometric model

    The algorithm of construction of reflections from the screens of complex shape. Geometric modeling based on the proposed algorithm makes it possible to conduct a rapid assessment of the distances between the fire building complex geometry, and between the process equipment, which is characterized by heat. Analytical dependences describing the process of building reflections, software algorithms and examples of calculations.

    Keywords: geometric modeling, geometrical optics, geometrical acoustics, the laws of reflection

  • Municipal solid waste management system using the GIS-technologies

    Solid waste management is one of the most important and complex international issues. Administration of the city of Rostov-on-Don has developed a new strategy for the creation of a system of waste recycling. For its success must enter a single system to manage solid waste using geographic information systems. This problem has become more important due to the increased amount of waste, complexity and interdisciplinary nature of the problem. Rapid globalization and urbanization have increased the number of solid waste, which is currently in landfills in many countries. Emissions and leaching of chemicals or toxic substances into groundwater leads to environmental pollution. In recent years, a growing scale of environmental degradation has led to the formulation of numerous initiatives, conventions and conferences, and stringent laws and statutes throughout the world.

    Keywords: Municipal solid waste management, GIS-technologies, Sustainable development, Separate collection, Recycling

      To assess the strength and deformability of the railway road bed must have analytical expressions for calculating the oscillation amplitudes at any point in the road bed and beyond. The results of experimental determination of the amplitudes of the oscillations in the sub grade of sandy loess sin the Republic of Uzbekistan. Shows plots of the decay amplitudes of the oscillations in the sub grade and beyond by passing high-speed trains. The analytical dependence of the calculation of the amplitudes of the oscillations.

    Keywords: Embankment, roadbed, the amplitude oscillation damping, vibrodinamika, loess-like sandy loam