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No 2 (2006)

ARCHITECTURE AND CIVIL ENGINEERING

5-10 432
Abstract

The executed researches of studying historical manors of Belarus, the analysis of domestic and foreign experience of restoration and modem use of manors have allowed to formulate purposes, principles, conceptual approaches and methods of restoration and adaptation of historical manors for cultural and tourist use.

10-16 435
Abstract

The paper considers the historic development of the artistic aspect in industrial architecture. For this purpose, three questions are investigated, namely: which artistic styles have been used, what has initiated development of artistic aspects and how professional architects have taken part in industrial design.

The analysis of industrial construction practice in the world allows to reveal approaches, motivations and means for the realization of artistic aspect and specific peculiarities of every historical periods.

16-21 479
Abstract

Determination of natural frequencies and vibration forms and beam reaction to a dynamic load while making dynamic calculation of beams resting on elastic soil foundation is shown in the paper.

21-24 1297
Abstract

Neither the Belarussian building codes nor reference literature contain any recommendations for calculation of pool conjugation behind a two- level dam. Available analytical dependences are rather awkward and complicated, that is why problems of pool conjugation behind two-level dams are of great importance. Their theoretical actuality is caused by the necessity to study physical essence of water discharge process over a two-level spillway. Its practical actuality is specified by the requirements of design and project institutions in respect of revision of methodology for calculation of such arrangements.

METALLURGY. МЕТАL WORKING. MECHANICAL ENGINEERING

25-30 377
Abstract

The paper presents a new technology for formation of segment teeth of agricultural machinery by plastic deformation instead of mechanical machining. Changes in segment design that permit to improve its operation and cutting quality are given in the paper. The paper describes advantages of the new technology allowing to ensure significant economical effect and increase sickle endurance and longevity. Power parameters of deformation process are theoretically calculated and justified by the experiments. The paper contains results of comparative sickle testings which have been manufactured in accordance with conventional new technologies.

31-42 350
Abstract

The paper presents main statements of the developed general scientific principles and experimental and analytical method for accelerated bench test of bearing structures and machine parts at a regular loading. According to the test results executed in terms of the proposed methodology it is possible to predict a service life of a number of automotive bearing structures for conditions of irregular loading.

The developed method has been used for execution of bench tests and calculation and experimental estimation of a service life of a truck tractor frame, prospective types of axles and elements of trailer train suspension and other bearing structures of automotive machinery of the Minsk Motor-Works.

43-48 1360
Abstract

The paper considers in detail a calculation of a multispan continuous beam using two methods: work method and method of three-moment equations. As a result of comparison and detailed analysis of these methods it has been exhibited that the calculation using three-moment equations is non effective and awkward method. It is known that the method for calculation of continuous beam using three-moment equations is only artificial transformation of work method. Thus while calculating any statically indeterminate systems including continuous beams it is more expedient to apply a common calculative method, that is a work method.

TRANSPORT

49-51 1370
Abstract

The designed stand is intended for checking serviceability of automated taking-off system and gear change in transmission with a dry fnction clutch and mechanical gearbox. The paper gives principal stand scheme, description of its operation and list of instrumentation and functional links between a mechanical part of the stand and actuating, measuring and controlling blocks of microprocessor system.

51-54 351
Abstract
The paper presents a method and an algorithm for on-board technical condition diagnostics of brake pedal angular displacement sensor. The structural scheme of the microprocessor system designed for on-board sensor technical condition diagnostics is also described in the paper.
54-57 338
Abstract
Compatibility absence of modular component parts of control hydro-blocks leads to reduction of a unification level and limits potential possibilities of their aggregate-modular design. The results pertaining to substantiation and development of hydraulic circuits of the connective and assembly module are given in the paper.

ЕСOLOGY. RESOURCE SAVING

58-61 1397
Abstract

The paper proposes a methodology for calculation of hydropulper parameters on the basis of energy balance. A hydropulper rotor is considered as a pressurizing pump with pт which is spent in a bath of the hydropulper for overcoming the hydraulic pressure losses in fiiction Δртр diffusion Δрд and vorticity Δру, due to shocks. The pressure z0 p g is taken into consideration and it is determined by a bath filling. An energy balance equation is formulated Qpт = ρKNn3d5 which is solved by anumerical method for determination of an expenditure Q in a circulation circle and pressure pт created by a rotor. The power consumed by the hydropulper rotor is determined by a formula Np = Qpт

POWER ENGINEERING

62-65 434
Abstract

According to the results of gas analysis it has been established that water- and coal gasification is rather satisfactorily described by three thermo-chemical equations. One of these equations is basic and independent and the other two equations depend on the first one.

The proposed process scheme makes it possible to explain the known data and also permits to carry out the gasification process and obtain high-quality hydrogen carbon-monoxide which is applicable for practical use.

NATURAL AND ACCURATE SCIENCES

66-68 1396
Abstract

It is proved that if an associated group A* of a nilalgebra A over an infinite field is solvable of class n then algebra A is solvable of the same class n as the Lie algebra.

68-72 308
Abstract

The paper develops a formula for an inversion of the integral wavelet transform in the space of square-summed-up functions and reveals a point-wise convergence of the inverse wavelet transform under Dini condition.

HUMANITIES AND SOCIO-ECONOMIC SCIENCES

73-78 336
Abstract

The paper considers reasons of semantic heterogeneity of abstract adjective-type nouns. A number of conceptual signs of abstract nouns being revealed on the basis of the German language material is given in the paper.

78-81 304
Abstract

The paper is dedicated to national-economic conception concerning the efficient use of flexible industrial systems under conditions of highly specific small enterprises integrated in holdings, where it is necessary to solve comprehensively scientific and technical, economic and managing problems of operation and development of such manufactures.



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ISSN 2227-1031 (Print)
ISSN 2414-0392 (Online)