Физика список научных статей
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FACTORS AFFECTING THE ULTRASONIC DISAGGREGATION OF POWDERS
Using finely dispersed mineral particles of various origins and morphologies offers a promising strategy in controlling the structure formation in cement composites. However, the use of such additives is hampered because those additives proved to be prone to consolidation into rather dense...
2019 / Shakhov S.A., Rogova E.V.ScopusВАКRSCIESCI -
NONLINEAR DEFORMATION AND STABILITY OF GEOMETRICALLY EXACT ELASTIC ARCHES
In the present paper a plane round double-hinged arch under the potential dead load is investigated. To describe the stress-strain state and the equilibrium stability the geometrically exact theory is used. According to this theory every point of the bar has two translational degrees of freedom and ...
2019 / Lalin V.V., Dmitriev A.N., Diakov S.F.ScopusВАКRSCIESCI -
FINITE ELEMENT MODEL OF REISNER’S PLATES IN STRESSES.
A method for calculating bending plates by the finite element method based on Reisner's theory is proposed. The method is based on the fundamental principles of minimum of additional energy and possible displacements. For discretization of the subject area, arbitrary quadrangular finite elements...
2019 / Tyukalov Yu.Ya.ScopusВАКRSCIESCI -
MIXED FINITE-ELEMENT METHOD IN V.I. SLIVKER’S SEMI-SHEAR THIN-WALLED BAR THEORY
Variational formulation of stability problems for thin-walled beams is presented. Geometrical stiffness matrix is derived from the stability functional. Shear deformation is taken into account by using V.I.Slivker’s semi-shear theory of thin-walled bars. Quadratic Hermite polynomials were...
2019 / Lalin V.V., Rybakov V.A., Ivanov S.S., Azarov A.A.ScopusВАКRSCIESCI -
MODELLING OF CONTACT INTERACTION OF STRUCTURES WITH THE BASE UNDER DYNAMIC LOADING
Constructively nonlinear problems with unilateral constraints are frequent in the calculation of various structures. At the same time, certain difficulties cause problems with the contact friction, as well as with the dynamic action of the load. In such cases, the contact problem becomes more...
2019 / Lukashevich A.A.ScopusВАКRSCIESCI -
MATURITY SENSORS PLACEMENT BASED ON THE TEMPERATURE TRANSITIONAL BOUNDARIES
The way in which the maturity sensors are placed determines their number required for a particular monolithic building skeleton. Previous studies scarcely address this aspect, providing only logical assumptions. Therefore, this study proposes an alternative placement strategy for maturity sensors...
2019 / Utepov Ye.B., Aniskin A., Ibrashov A.P., Tulebekova A.S.ScopusВАКRSCIESCI -
CFD SIMULATION OF THE CONVECTIVE FLOWS IN THE VERTICAL CAVERNS
The purpose of this paper is determination the critical geometric dimensions of a three-dimensional vertical heated cavern. In this rate the convection's contribution to heat transfer will be limited due to thermal conductivity at a fixture temperature drop. The model validated and verified by...
2019 / Petrichenko M.R., Sergeev V.S., Nemova D., Kotov E.V., Andreeva D.S.ScopusВАКRSCIESCI -
THE TEMPERATURE WAVES MOTION IN HOLLOW THICK-WALLED CYLINDER
A hollow cylinder with thick walls is one of the most complex objects to calculate the un-steady temperature field, so this field is the least studied. However, such objects are found in many modern constructions of systems of generation and distribution of heat. In the proposed work it deals with...
2018 / Samarin O.D.ScopusВАКRSCIESCI -
AERODYNAMICS OF BUILDING STRUCTURES FOR FLUE GAS REMOVAL
Natural fuel burning in modern heat power plants with flue gas formation is accompanied with harmful environmental impact and potential opportunity of acid fallout. This can lead to local or even global catastrophe under adverse circumstances. High-rise structures combining a smokestack and a...
2018 / Akhmetov V.K., Shkadov V.Ya., Konon P.N.ScopusВАКRSCIESCI -
NATURAL OSCILLATIONS OF A RECTANGULAR PLATES WITH TWO ADJACENT EDGES CLAMPED
We study the natural oscillations of a rectangular plate, two adjacent edges of which are clamped, and the other two are free (CCFF – plate), as an element of many building structures. The deflection function is chosen as a sum of two hyperbolic trigonometric series. Both series obey the main...
2018 / Sukhoterin M.V., Baryshnikov S.O., Knysh T.P., Abdikarimov R.A.ScopusВАКRSCIESCI -
NONLINEAR PARAMETRIC OSCILLATIONS OF VISCOELASTIC PLATE OF VARIABLE THICKNESS
Isotropic viscoelastic plates of variable thickness under the effect of a uniformly distributed vibration load applied along one of the parallel sides, resulting in parametric resonance (with certain combinations of eigenfrequencies of vibration and excitation forces) are considered in the paper....
2018 / Mirsaidov M.M., Abdikarimov R.A., Vatin N.I., Zhgutov V.M., Khodzhaev D.A., Normuminov B.A.ScopusВАКRSCIESCI -
ANALYTICAL CALCULATION OF THE FRAME WITH AN ARBITRARY NUMBER OF PANELS
A rod model of a statically determinate planar frame with four supports is proposed. The task is to obtain an analytical dependence of the deflection of the truss under the action of various loads on the number of panels in the crossbar and in vertical support trusses. To solve the problem, the...
2018 / Kirsanov M.N.ScopusВАКRSCIESCI -
THE EFFICIENCY OF THE NOISE BARRIER INSTALLED ON THE ACOUSTICALLY UNTREATED GALLERY
The research is targeting at multi-level overpasses which offer one of the solutions for laying the highway in conditions of dense residential development and close proximity to bedroom communities. In terms of acoustics, multi-level overpasses are semi-enclosed structures made of metal and...
2018 / Shasurin A.EScopusВАКRSCIESCI -
MODELING OF POROUS MATERIAL FRACTURE
Wide use of various porous materials in construction engineering applications requires development of up to date methods of non-destructive characterization and optimization of such materials. This work explores an approach to modeling of fracture of a brittle porous material. Available 3D digital...
2017 / Levandovskiy A.N., Melnikov B.E., Shamkin A.A.ScopusВАКRSCIESCI -
DISAGGREGATION OF ULTRAFINE POWDERS IN CONDITIONS OF ULTRASONIC CAVITATION
Use of high-dispersive additives as structure modifiers is one of the most effective instruments of cement composites required technical exploitation characteristics increase nowadays. However, use of high-dispersive powders is complicated by the fact that their particles are consolidated into...
2017 / Shakhov S.A., Rogova E.V.ScopusВАКRSCIESCI -
GROUND MOISTURE PHASE TRANSITIONS: АCCOUNTING IN BHE'S DESIGN
The results of numerical and experimental studies devoted to the evaluation of the effect of phase transitions of pore moisture in the soil mass surrounding the borehole heat exchangers (BHE) on the thermal conductivity of the adjacent soil and on the temperature of the coolant circulating through...
2017 / Vasilyev G.P., Gornov V.F., Peskov N.V., Popov Mik.P., Kolesova M.V., Yurchenko V.A.ScopusВАКRSCIESCI -
IMPACT OF FOREST FIRES ON BUILDINGS AND STRUCTURES
The mathematical modeling of forest fires actions on buildings and structures has been carried out to study the effects of fire intensity and wind speed on possibility of ignition of buildings. The crown forest fire is introduced as a heat and mass source defined by the empirical values of average...
2017 / Fryanova K.O., Perminov V.A.ScopusВАКRSCIESCI -
STRESS-STRAIN STATE OF THREE-LAYERED SHALLOW SHELLS UNDER CONDITIONS OF NONLINEAR CREEP
The resolving equations were obtained and a calculation technique was developed with allowance for the nonlinear creep of three-layer plates and shallow shells with a lightweight filler. The problem was reduced to a system of three differential equations with respect to the stress function,...
2017 / Chepurnenko A.S.ScopusВАКRSCIESCI -
STRESS-STRAIN STATE OF CLAMPED RECTANGULAR REISSNER PLATES
The paper focuses on obtaining numerical results for a rectangular Reissner plate with clamped contour under the influence of a uniform load using the iteration superposition method of four types of trigonometric series (correcting functions). The initial function of bendings is selected as a...
2017 / Sukhoterin M.V., Baryshnikov S.O., Knysh T.P.ScopusВАКRSCIESCI -
COMBINED METHOD OF 3D ANALYSIS FOR UNDERGROUND STRUCTURES IN VIEW OF SURROUNDING INFINITE HOMOGENEOUS AND INHOMOGENEOUS MEDIUM
The application of algorithms of the finite element method (FEM) or the boundary element method (BEM) reveals some peculiar properties for a numerical solution of the three-dimensional analysis in infinite domains. Various algorithms offer to avoid such problems at the expense of combining...
2016 / Chernysheva N.V., Kolosova G.S., Rozin L.A.ScopusВАКRSCIESCI