No 3 (2011)

Articles
THE VIBRATIONS AND STABILITY OF BARS WITH PHYSICALLY NONLINEAR MATERIALS
Ivanov S.P., Ivanov О.G., Ivanova A.S.
Abstract
In the article, the methods of vibrations and dynamic stability analysis of bars having the nonlinear diagram deformation of material are suggested. The example of calculation of a bar with hinged supports of ends is given. The graphs of bar deflection as a function of time parameter are constructed.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):3-6
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SEARCHING THE RATIONAL PARAMETERS OF BAR STEEL structures BASED ON ADAPTIVE EVOLUTIONARY MODEL
ALEKSEYTSEV A.V., Kurchenko N.S.
Abstract
An iterative optimization scheme of metal beam structures is developed with using a genetic algorithm with alternative ways of forming populations and adaptive mutation operator, crossover and inversion. This algorithm allows solving large problems to avoid occurrence of "empty" populations, has a relatively low complexity and provides opportunity to obtain new rational decisions. The
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):7-14
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RESEARCHING OF CALCULATING MODELS OF THE WALLS OF SILO BUILDINGS
MARKOVICh A.S., PANKRATOVA G.E.
Abstract
Repeating failures and destructions of silo constructions are the result of inconsistency of existing methods of calculation. The present article gives the critical analysis of known calculated models of silo walls: flat system, system with the approached account of spatial work, spatial system of silo covers on V. Vlasov 's method. Authors mark necessity of further experimentally-theoretical researches of distribution of loading for silos, and also the account in calculations of variability of loadings and spatial work of walls of a silo by means of modern systems of computer modeling.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):15-23
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INCREASING OF THE LOAD-CARRING CAPACITY IN THE STRENGTHENED LOADED STRUCTURES
SERAZUTDINOV M.N., UBAYDULLOEV M.N., ABRAGIM K.A.
Abstract
In article the variation method is presented to calculate the stress-strain state of structures strengthening without withdrawal from the exploitation. The procedure is presented to determine the strengthening effectiveness on loaded beam structures with taking into account elastic-plastic works of material. On the basis of the stated method, the computer program is made and it allows to simulate the strengthened construction model work and to estimate its stress-strain condition at various stages with taking into account the deformations and the stresses which have an effect during the strengthening.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):a23-30
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Research of mechanisms of formation of a tense-deformed condition of elements of a frameWORK of a multi-storey building at local damage of load-carrying structures
Grigorshev S.M.
Abstract
In article, it is investigated mechanisms of formation of a tense-deformed condition of elements of a framing of multi-storey buildings, at local damage of one of vertical load-carrying structures. Researches are spent both in static, and in dynamic statements of destruction of a load-carrying structure.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):31-44
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THE OPTIMAL DESIGN OF PIVOTAL SYSTEMS TOPOLOGY
Klyuev A.V., Klyuev S.V., Lesovik R.V.
Abstract
The optimal design methods of pivotal systems topology is suggested here. The pivotal system design is considered here as an example
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):45-48
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THE FINITE ELEMENTS OF A QUADRILATED SHAPE FOR ANALYSIS OF SHELLS TAKING INTO CONSIDERATION A DISPLACEMENT OF A BODY WITH RIGID BODY MODES
KLOCHKOV Y.V., NIKOLAEV A.P., KISELYEV A.P.
Abstract
On the basis of a curvilinear quadrilated finite element the new mode of approximation of fields of displacements is realized, which essence consists that at a stage of approximation of interior magnitudes through nodal unknown of a finite element accept not separate components of a vector of displacement and their derivative, and immediately vector of displacement of nodal points of a finite element and its derivative. On an example of account of an equalizer loaded by interior pressure with presence of constructional displacement as rigid body is shown. That use of the developed algorithm solves a well-known problem FEM - account of displacement of finite element as rigid body.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):49-59
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PRESSURE OSCILLATIONS IN CIRCULAR CYLINDRICAL SHELLS UNDER CONTINUITY DISTURBANCE OF FLUID COLUMNS
Rekach F.V.
Abstract
Analysis of a pipe-line with a reservoir and a gate valve under continuity disturbance of fluid columns is described in an article. Results are compared with experiments.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):60-62
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ON THE NATURAL VIBRATIONS OF THE PLATE THINNED CENTRAL PART
Khakimov A.G.
Abstract
Using two natural lateral axisymmetric flexural vibration frequencies, we can determine both radius and thickness of the plate thinned central part.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):63-66
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PROBLEMS OF CALCULATION AND THE DESIGN OF BEARING STRUCTURES OF DIPLOMATIC BUILDINGS IN SEISMIC ZONES
Razin A.D.
Abstract
In the results of researches carried out in the Peoples Friendship University of Russia, the main variants of structure systems and forms of diplomatic buildings in seismic zones are received.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):67-68
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THE ANALYSIS OF THE POSSIBILITIES OF USING ASTROFLEX REBAR IN INDUSTRIAL AND TRANSPORT BUILDING
Ponomarev A.N., Mospan E.A.
Abstract
Constructive variants of composite armature and variants of manufacturing techniques of the compound composite armature are considered. ASTROFLEX rebar is a composition of an external layer of patented carbon-based nanocomposite material PRECIZER and an internal core of another patented nanocomposite Nanconcrete Light (nanocomposite armature patent claim -"ASTROFLEX", PCT/RU2010/000290). ASTROFLEX rebar offer the following features: corrosion firmness, durability, high adhesion to concrete, a high operational resource, high resistance to the sign-variable loadings, the raised fire resistance and the comprehensible cost price. The basic directions of using ASTROFLEX rebar in hydraulic engineering building and in a bridge building are analyzing.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):69-74
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CORROSION DETERIORATION of the thin-walled elements processed by a method of ionic implantation
Yakupov N.M., Giniyatullin R.R.
Abstract
Protection against corrosion destruction of elements of designs and constructions, is one of the major problems of the present. One of perspective directions of increase of corrosion firmness is updating of a blanket of an element of a design. In work some results of an experimental research of corrosion deterioration of elements of designs on which surface carbon ions have been implanted are resulted. For the analysis of results the experimentally-theoretical approach is used.
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):a74-79
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ANALITIChESKIE POVERKhNOSTI V ARKhITEKTUREZDANIY, KONSTRUKTsIY I IZDELIY (avtory S.N. KRIVOShAPKO, I.A. MAMIEVA)
ZVERYaEV E.M.
Abstract
Structural Mechanics of Engineering Constructions and Buildings. 2011;(3):80-80
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