No 4 (2010)

Articles
NONLINEAR DYNAMICS OF CLOSED CYLINDRICAL SHELLS UNDER THE ACTION OF LOCAL TRANSVERSE LOADS
Krysko V.A., Shagivaleev K.F.
Abstract
The closed cylindrical shell finite length under the action of constant at time and alternating local transversal loads in the context of nonlinear classical theory of gentle shells is consider. The equations in partial derivative are reduce to the combined of ordinary differential equation at times (the problem Koshi) using Bubnov-Galerkin's method as a higher approximation in Vlasov's form. The combined of ordinary differential equations is solved Runge-Kutt's method of the fourth order. The convergence of Bubnov-Galerkin's method is analyzes. The dynamical critical loads under the action unlimited impulse at time for conservative system (ε = 0) and alternating transversal load for dissipative system (ε = 1) in depending on quantity of members expansion series are finding
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):3-11
views
FEATURES OF INFLUENCE OF WIND FLOW ACTING ON DOMES AT DIFFERENT ANGLES
Veselеv Y.A., Karabutov M.S.
Abstract
In this paper the features of the wind flow's influence impacting at the different angles on the arched covers are given. The calculations were based on the COSMOSFloWorks software package. The virtual aerodynamic tunnel with the roll shape arch, located in it was designed. The Navier-Stokes equation and the equation of the condition of the fluid medium's components is the methodological basis of the research. The estimation of the wind flow's motion paths, aerodynamic factors and the pressure in every point of the arch is presented.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):a11-18
views
MECHANISMS OF DESTRUCTION OF ROCKS UNDER DRILLING
SINEV S.V.
Abstract
Efficiency of drilling remains at catastrophic deterioration of arms roller bits. This phenomenon is not entered in existing theories of destruction which reject possibility of formation of the main crack in parallel a semispace plane. Presumably it is formed at high-speed unloading of the rock loaded within elastic deformations
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):a18-28
views
THE BENDING OF PHYSICALLY NONLINEAR PLATES WITH DIFFERENTLY RESISTING IN TENSION AND COMPRESSION MATERIALS
Ivanov S.P., Ivanova Е.S.
Abstract
In the article, the technique of the bending analysis of physically nonlinear plates with different resisting materials is suggested. The differential equilibrium equations of the plate are inducted. The example of design of square plate is considered. The graph of variation of deflection in the plate center against actual loading is constructed.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):29-31
views
FLAT PROBLEM OF THEORY OF JUMP IN BASE METHOD OF FINAL ELEMENTS IN MIXED UNDERSTANDING IN ACCOUNT PHYSICAL NONLINEARITY
Gureeva N.A., Ar'kov D.P.
Abstract
For the calculation of developments in conditions of flat problem of theory of jump is designed matrix an deforming tetragonal end element on the count of physical material uneven line in base deformation theories of plasticity. On the measure that as a node unknown finite element were taken incriminations of displacing and incriminations of voltages. Incriminations of voltages and moving an internal spot of end element were approximated through node values of sought values by correlations of two linear sought values.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):32-36
views
CORROSION AND HYDROGEN CRACKING STRENGTH OF METAL GOODS
KOZATSHENKO A.B., Ivanov S.S., Dikova E.V.
Abstract
The estimation of strength at alternate tensile loads of metal goods has been presented resulting from experimental data obtained during the research of corrosion and hydrogen cracking at tension stresses and also from the criterion of linear summation of accumulated failures.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):37-39
views
EQUILIBRIUM STATE ANALYSIS OF A SYSTEM WITH UNILATERAL CONSTRAINTS BY FINITE DISPLACEMENTS
Goldshtein Y.B.
Abstract
A stability problem for an elastic structure subjected to conservative and active forces is considered. The structure has unilateral constraints and initial imperfections. An example of a system with two degrees of freedom shows that in general case, the analysis of stable states of such structures may be performed only on the basis of a non-linearized problem of stability.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):a39-45
views
CALCULATION OF STATICALLY INDETERMINABLE STRUCTURES STRENGTHENED BY THE METHOD OF REDISTRIBUTION OF STIFFNESS
Ubaydulloyev M.N.
Abstract
The procedure is presented to calculate the effective of strengthening for the statically indeterminable structures reinforced by the method of directed redistribution of stiffness. The dependences by definition of load - carrying capacity of the strengthened structures situated in composite stress state are obtained. The getting results allowing to estimate degree of increase of load - carrying capacity of a strengthened structures at elastic-plastic deformations are pre-sented.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):a45-50
views
BIFURCATIONAL STABILITY OF A SYSTEM CONSTRUCTION BASED ON A FOUNDATION LAYER WITH Non-linearity OF ITS PROPERTIES
Inozemtzev V.K., Inozemtzev O.V., Strelnikova K.A.
Abstract
In the article results of calculation of a critical load for system «a construction - a base plate - a layer of the basis » are considered within the limits of a flat problem. The model of system uniting absolutely rigid construction on a deformable base plate, cooperating with physically nonlinear layer of the basis is shown, allowing to reduce a problem of stability of a construction to a problem about own values
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):51-56
views
THE DETERMINATION OF SPATIAL WORK OF FRAME OF BUILDINGS WITH COVERINGS IN THE FORM OF METAL COMPLEX SHELLS
Davydov E.Y.
Abstract
In the paper the analytical variant of determination of spatial work for building's frame covered by compound envelopments is discussed. The particular feature of the considering structures is the forming of surface from separated industrial panels-envelopments, which have the span construction in the form of hyperbolic paraboloid. The panels-envelopments are made of steel profiled sheets with significant constructive anisotropy. The real characteristics and maintenance conditions of industrial buildings were considered during the task solution. The results are presented in the graphs designed for practical application.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):a56-61
views
Effect of contact stresses in places of contact of wheel and road covering for interface cracks
Hasanov S.H.
Abstract
The plane problem of mechanics of fracture cracks cracks-stratification, arising at the interface of road covering coupled with the elastic basis of another material, when the wheel is pressed into the road surface under the influence of an arbitrary system of forces is considered.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):62-66
views
EXPANSION OF THE FIELD OF APPLICATION OF THE SHEETS METAL FLOOR DECKING FOR THE COMPOSITE SLABS
Rumyanceva I.A.
Abstract
In the article are recommendations the new profiled steel sheeting as reinforcement of composite slabs, use leads to increase in the effectiveness and expansion of the field of application of steel-reinforced-concrete overlaps with the steel shaped floorings
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):67-68
views
EXAMINATION AND RECOMMENDATION FOR BUILDING INTENSIFICATION OF TRADING HOUSE AFTER FIRE
Aydemirov K.R.
Abstract
The estimation of the technical state load-bearing structures is given, the value of losses of bearing capacity after fire was determined. progressing the character of local damages from action of non-stationary high-temperature condition is mounted. Recommendations for building intensification are developed for its further safe operation
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):67-74
views
EXPERIMENTAL RESEARCHES OF THE PILE-CAP DEEPENINGAT VIBRATION OF A PILE FOUNDATION
Kolesnikov A.O., Popov V.N.
Abstract
Experimental researches of pile foundations dynamic behavior with deepened pile-cap are carried out. Estimations of influence on amplitudes of vibrations of such factors as deepening of the pile-cap, quantity of piles in the foundation, structure of a ground, orientation of a pile bush in relation to a direction of vibrations are received. It is certain, that deepening of the pile-cap it is possible to achieve essential decrease in amplitudes of vibrations.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(4):75-80
views

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies