No 1 (2011)

Articles
DESIGN OF UMBRELLA SURFACES FROM THE PARTS OF TRANSLATIONAL SURFACES FORMED BY THE CIRCLE OF CONSTANT RADIUS
Ivanov V.N., Krivoshapko S.N.
Abstract
The geometrical research of translational surface formed by the circle of constant radius supported by two meridians of the sphere or the torus is presented. The vector equations are derived in lines of translation and in lines two of which coincide with the given meridians. The opportunity of design of umbrella shells is illustrated by the example of the real building. The umbrella surfaces of positive and negative Gauss curvatures are presented.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):3-7
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CALCULATION OF THIN-WALLED SPATIAL SYSTEMS CONSISTING OF JOINTED CLOSED BARREL SHELLS BY THE METHOD OF FORCES
Shagivaleev K.F., Burov S.N.
Abstract
To calculate the thin-walled spatial system, consisting of two closed barrel shells we used one of the methods of structural mechanics, namely, the method of forces. The essence of a method is stated on an example of the thin-walled spatial system, consisting of two closed barrel shells, one of which is subjected to a radial load.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):8-12
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CRITERION OF DURABILITY OF PLANE-STRESSED CORROSION DAMAGED CONCRETE ELEMENT AND ITS APPLICATION TO CALCULATION OF FERRO-CONCRETE CONSTRUCTIONS
Kolchunov V.I., Androsova N.B.
Abstract
In work advise to construction of criterion of durability loaded corrosion damaged concrete are given at plane stress, necessary for the decision of problems of survivability of ferro-concrete constructive systems in the conditions of simultaneous display power and excited environment extremal influences.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):13-19
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Stability of non-linear stochastic systems
POTAPOV V.D., Dibrov V.A.
Abstract
This work presents the problem of modeling of the non-linear system movement under the action of determined and stochastic loads. On the example of an elastic beam laying on the non-linear base the numerical method of the problem solution is considered. The stabilization of the unstable motion of the beam by the addition of a random noise is possible
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):a19-26
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MODELING OF TEAMWORK OF CONSTRUCTION AND THE BASETAKING INTO ACCOUNT CONSTRUCTION ESCALATING
Andreev V.I., Barmenkova E.V., Matveyeva A.V.
Abstract
The model "design-foundation-basis" in the form of the two-layer beam which bottom layer corresponds to the foundation, and top - designs with the corresponding resulted characteristics are developed. The model considers the joint work of construction and the foundation on elastic foundation. From the general equations of elasticity theory, taking into account the mass forces obtained resolving equations and formulas for the three components of stress. The dependencies of internal forces in a beam of high design, as well as diagrams of the stresses for the model and the traditional formulation of the problem. It is shown that the stress diagrams for the two considered design schemes differ considerably.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):27-30
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FEATURE OF POWER RESISTENCE OF THE REINFORCED CONCRETE ELEMENTS DAMAGED BY CORROSION SIGNVARIABLE LOADING
Bondarenko V.M.
Abstract
Sentences under the account dissipative influence of hysteresis power losses and corrosion damages of the materials ferro-concrete on power resistance of structures to deformation are proved and made at sign variable loading.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):a30-38
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A MODEL OF DEFORMATION OF VISCOUS-AND-ELASTIC MATERIALS
Erokhin S.V., Gachaev A.M.
Abstract
Viscoelastical deformation model based on fractional derivatives submitted. Model parameter determination is described. It allows to predict system behavior under different loading.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):39-43
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THE CALCULATION OF INELASTIC COMPOSITE CIRCULAR ARCHES
Rochev A.A.
Abstract
The paper deals with the calculation of circular arches with variable cross section on the basis of the application of the main provisions of the general theory of composite rods of A.R. Rzhanitsina. Used the expression obtained by the author to determine the equivalent vogue-ing strain, taking into account the compressibility of the axis of the arch, the shear strain in the rods exercises appropriate arch, nonlinear relation between strain and stress, and strain associated with distortion-WIDE shape of the cross-section of the arch bars.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):44-50
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COMPARATIVE APPRASAL OF VARIANTS OF INTERPOLATION DISPLACEMENT FIELDS ON THE EXAMPLES OF THE PROBLEM AXIALLY SYMMETRIC THE LOADED SHELL OF REVOLUTION
Klochkov J.V., Nikolaev A.P., Marchenko S.S., Shubovich A.A.
Abstract
Now for the analysis mode of deformation of the majority shell of constructions of a building and machine-building structure use modern computer complexes such, as ANSYS, NASTRAN, ABACUS and others. All these complexes have the convenient multipurpose interface, powerful library of finites elements, and in most cases effectively allow to investigate processes of deformation of constructions in linear and nonlinear statements. At the same time it is not necessary to forget that adequacy of the received parameters is mode of deformation of constructions in the certain degree depends on those hypotheses, preconditions, models of elements of discretization, ways of approximation and other factors which are realized in this or that computer complex. So, for example, all modern finites elements settlement complexes are based on the elements constructed on independent interpolation to procedure which essence consists that everyone of a component of a vector of displacement of an interior point of an element of discretization is interpolated through pivotal values of this components and other two component does not depend on modes values, that not always reduce to reception of acceptable results. In present article view variants of reception interpolation expressions on an example of a finite element axially symmetric the loaded shell of rotation with six degrees of freedom in node and are considered, and high efficiency of algorithm with vector interpolation of displacement fields.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):a50-57
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THE INVESTIGATION OF STABILITY OF ELASTIC PLATES AND SHELLS WITH THE HELP OF FE MODELING
Manuylov G.A., Kositsyn S.B., Begichev M.M.
Abstract
The features of the finite element modeling and solution of problems of stability of elastic plates, closed spherical and spheroidal shells, shallow and nonshallow spherical shell segments in linear and geometrically nonlinear formulations, with the influence of small imperfections of the loading
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):58-65
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THE DECISION OF PROBLEMS WITH UNILATERAL CONSTRAINTS AND CULON'S FRICTION UNDER THE DYNAMIC LOAD
Lukashevich A.A.
Abstract
The numerical approach to the decision of dynamic problems with unilateral constraints and Culon's friction is offered. The decision is formulated on the basis of step-by-step analysis (in time) method with use of frame contact finite elements. The reduced algorithm is illustrated by numerical example.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):66-74
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PRESSURE OSCILLATIONS IN CIRCULAR CYLINDRICAL SHELLS UNDER SWITCHING - OFF OF CENTRIFUGAL PUMPS WITH DIFFERENT INERTIA MOMENT AND SUTER DIAGRAMS
Rekach F.V.
Abstract
A model of centrifugal pump, working both: as a boarder element and in ring schemes is described. Analysis of pressure oscillations, depending on inertia pump moment and Suter diagrams is given.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):a74-80
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NAUChNYY MEZhVUZOVSKIY SEMINAR «GEOMETRIYa I RASChET TONKIKh OBOLOChEK NEKANONIChESKOY FORMY»
GRIN'KO E.A.
Abstract
Structural Mechanics of Engineering Constructions and Buildings. 2011;(1):a80-80
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