No 4 (2016)

Articles
MECHANICS OF THIN-WALLED STRUCTURES: HISTORY, DIAGNOSTICS
YAKUPOV N.M.

Abstract

Skins, possessing unique properties, are widely used in all industries. They take heavy loads, work in harsh environments and are exposed to the physical fields. It is necessary to assess the carrying capacity of thin-walled structures, taking into account the influence of fields and environments, as well as on the basis of revised relations theory of shells. The fragments of the history of the birth of the nonlinear theory of shells and membranes, a method of evaluating the mechanical properties and the evaluation approach of stress concen- tration in thin-walled elements of designs of complex structures. There have been new results on the effects of corrosion
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):1-13
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USING FGM FOR CYCLIC SHELL STRUCTURES
GIL-OULBE MATHIEU -., ISMAEL TAHA FARHAN -.

Abstract

This article deals with FGM for cyclic shell structure and the finite element modeling and analysis of functionally graded (FG) shell structures under self-loading. In order to study the influences of important parameters on the responses of FG shell structures, some types of cyclic shells have been considered. The responses obtained for FG shells are based on the analysis; some important results are presented and discussed for thincyclic shells.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):14-20
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TO THE QUESTION OF STRESS STATE OF JOINTS OF WOODEN ELEMENTS WITH THE FRONTAL CUTTINGS
Markovich A.S.

Abstract

The article describes the results of the computer analysis of the stress-strain state of the support junction in laminated metal-wood truss with frontal cutting. On the basis of the re- search, the necessity of the account of the normal stresses between layers, from which value of the main tensile stresses greatly depends, as well as the direction of areas in which they oper- ate. Besides, effectiveness of glued inclined rods for increase shear strength of joints on fron- tal cuttings was investigated and confirmed.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):21-25
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VIBRATION OF BEAMS, LYING ON THE SOLID NONLOCAL ELASTIC FOUNDATION
Vasilenko A.A.

Abstract

Now, the calculation of beams, lying on the solid elastic foundation is fulfilled with us- ing different model of elastic foundation. One of the most common is a model, based on the hypothesis of a proportion betweenthe reaction of the foundation at the point with the coordi- nate x and slump at the same point (the hypothesis of Winkler) which however is not accurate enough describes the behavior of structures lying on the solid elastic foundation. In this paper, we consider the problem of beam vibration, lying on the solid nonlocal elastic foundation. We give a comparison of calculation results, obtained with using the pro- posed model and the Winkler model
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):26-32
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APPLIED WAY OF THE ASSESSMENT OF LOSSES OF ENERGY OF DEFORMATION OF THE REINFORCED CONCRETE DAMAGED BY CORROSIONUNDER SIGN-VARIABLE LOADING
Bondarenko V.M.

Abstract

This article investigates the problem of calculating the energy losses in the alternating power loading of corroded reinforced concrete. This happens when one replaces the variables of the nonlinear characteristics of the power resistance and corrosion damage by an integral module of deformations and integral retention. They depend on intensity of loadings and corrosive influences.They are calculated from the condition of minimum variance for the height of the cross sections between the original integral values of structures characteristics
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):33-39
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AN ANALYSIS OF REVIEWS ON THEORY OF THIN SHELLS AND ON THEIR APPLICATION
ThomaAnamaria A.

Abstract

The materials presented in the paper can help to young researchers dealing with problems of geometry, theory of thin shells, and their application in building, can point out to the sub- jects of future investigations. It is shown that space structures give rise to the most interest of architects and designers due to highly speed computers and program complexes
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):39-42
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STRESSSTATE OF STRUCTURALLYNOT UNIFORMRODS MADE FROM DIFFERENT MODULE MATERIALS UNDER THERMO-FORCE INFLUENCES
Mishchenko A.V.

Abstract

The equationsfor the normal and shear stresses estimation of in structurally not uniform rods are received.These rods possess the variable cross sections and are made from difference modulus materials. The influence of three internal forces factors, surfaces forces and line- segment temperature function is taken into account. The analysis of difference moduledegree to the stresses in trapeziform section influences is considered.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):43-52
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BIFURCATION PROBLEMS OF STABILITY OF HIGH-RISE BUILDINGS
Inozemtze V.K., Zhestkova S.A.

Abstract

We consider two bifurcation problems of stability with respect to high-rise buildings, in- teracting with a deformable base. The effect of "overall stability" is estimated on the stability of the rectilinear shape of the axis high-rise object.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):53-57
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ACCURACY OF THE NUMERICAL METHOD RESULTS IN THE DISPLACEMENT IN THE ELASTIC REFLECTION OF STRESS WAVES IN THE FORM OF A TRIANGULAR PULSE FROM THE FREE SURFACE OF THE PLATE
Musayev V.K., Dikova E.V., Kormilitsin A.I., Samoylov S.N., Starodubtsev V.V.

Abstract

The paper provides information about the reliability and accuracy of the results of nu- merical simulation of stress waves in solid deformable environment. The problem of elastic reflection of stress waves from the free surface of the plate. The task is implemented using the finite element method in movements. The comparison is made with results of the analytical solution at the front of the flat longitudinal wave. The studied problem is presented in the form of an infinite plate
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):57-61
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NTERACTION OF THE TOOL DURING MECHANICAL MACHINING
Belousov Y.V.

Abstract

In the article,the simulation of force interaction of tool and workpiece during machining is considered. The calculated dependences for the determination of deformationsof the work- piece material under cutting wedge and the minimum value of the rake angle of the tool are given.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):62-65
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DEVELOPMENT of TECHNOLOGY SOFTENING INDUCTION ANNEALINGOF WORKPIECES FROM STEEL X15
Sokolova T.V., Sokolov A.M.

Abstract

The article is devoted to the development of modes softening annealing treatment steel15Хusing high frequency induction heating with the purpose of conducting cold forging. Mechanical properties and microstructure characteristicswere investigated. It was shown that the form of cementite does not play a role in the process of deformation of low-carbon low- alloy steel.bn
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):66-70
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NUMERICAL MODELING OF MASSE SHRINKING CLAYEY SOILS IN THE DEPRESSION OF LAMA IN THE SOUTH OF BENIN
JudicaelKoffi A., Abalo P.K., Gerard G.A., Gerard D.

Abstract

This article presents the results of an experimental study about four soil samples coming from Masse, a region crossed by the East depression of LAMA in the south of Benin, where impor- tant damages have been recorded (rising of thefoundations, deformation and cracking of the infrastructures, tearing of the surface coat of pavements...). In the first stage, a physico- mechanical characterization of the soil samples is achieved bylaboratory tests. The second stage of this study was reserved to the numericalmodeling of the shrinkingby basing on the analysis of the behaviour of the curves obtained at the end of the laboratory odometer tests. This approach allowed us to describe the variation of the indication of the voids ratio accord- ing to the loading pressure, to elaborate a mathematical model permitting to simulate the odometer curve of a loading-discharge cycle and to determine the parameters of compressibil- ity. The results show a good quality of the adjustment. A negligible mistake of the order of 0,3% has been recorded
Structural Mechanics of Engineering Constructions and Buildings. 2016;(4):71-80
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