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Bondarev A.,Donbas National Academy of Engineering and Architecture | Yugov A.,Saint Petersburg State University
Procedia Engineering | Year: 2015

Mathematical models of the method of generating large-span rod systems with the manufacturer defect and assembly sequence at construction process are offered in the article. The explanations and formulas used in the universal algorithm that allows generate of the proposed method are offered. This article gives an analysis of previous theoretical and experimental studies. By the example of a cell of hinged-rod system shows the technology to solve this problem by using the suggested method. The results of identifying the potential assembly errors in the metal single collar cylinder shell. Assembly forces are defined that occur in the shell when it is assembled - with mounting influence. © 2015 Published by Elsevier Ltd. Source


Gerasimchuk V.S.,Kharkiv Polytechnic Institute | Shitov A.A.,Donbas National Academy of Engineering and Architecture
Physics of the Solid State | Year: 2012

The dynamics of domain walls of the ab type in weak ferromagnets with a quadratic magnetoelectric interaction has been studied in ac magnetic and electric fields. The specific features of the vibrational and drift motions of the domain walls as functions of parameters of the external fields and characteristics of the material have been discussed. The possibility of drift occuring the domain walls in a purely electric field has been predicted. © 2012 Pleiades Publishing, Ltd. Source


Postnikov V.A.,Donbas National Academy of Engineering and Architecture
Russian Journal of Physical Chemistry A | Year: 2014

Liquid-solid phase equilibria are studied in the eutectic benzoic acid-naphthalene system by means of thermic analysis (DTA, CTA), on the basis of which the liquidus line and eutectic point (x e ≈ 50 mol %, T e ± 340 K) are determined and the phase diagram is constructed. Average precrystallization supercooling temperatures ΔT L - of the liquid phase relative to liquidus temperature T L are determined, allowing us to locate the region of solution metastability on the phase diagram. Excessive functions of the components in the liquid phase are found via thermodynamic modeling using the Margules equation and experimental data. The boundaries of the region of liquid solution metastability are estimated from the thermodynamic conditions of solution stability. © 2014 Pleiades Publishing, Ltd. Source


Postnikov V.A.,Donbas National Academy of Engineering and Architecture | Chertopalov S.V.,Donetsk National University
Crystallography Reports | Year: 2015

The growth of organic single crystals of naphthalene (C10H8) and anthracene (С14H10) at the liquid‒air interface from a mixture of solvents has been investigated. The growth technique used in the study makes it possible to obtain single-crystal sheets up to 10 mm in size for 24 h. The surface morphology and structure of the crystals have been analyzed by optical microscopy and X-ray diffraction. C10H8 and С14H10 single crystals grow coplanarly along the (001) plane. A thermodynamic model of the flat-crystal nucleus formation at the liquid‒air interface, based on the analysis of the change in the free Gibbs energy, is considered. © 2015, Pleiades Publishing, Inc. Source


Radionov T.V.,Donbas National Academy of Engineering and Architecture
Journal of Architecture and Urbanism | Year: 2014

In the article the strategic reconstruction issues of standardized development objects that are in the difficult geo-climatic conditions are examined. The solution of such issues depends on the demographic, social and economic position of the considered locality. During the research basic tasks were set that are aimed at the investigation of geological conditions of the area, the detailed analysis of the typological characteristics of buildings and structures that are undergoing the reconstruction as well as taking into account legislative environment of the project activities in this direction. Researches conducted, tasks set and recommendations developed have given the opportunity to present the main results of researches and to formulate definite conclusions. Scientific novelty of the research lies in the development of scientific and practical recommendations concerning the reconstruction of standardized development objects which are located in the difficult geoclimatic conditions. © 2014 Vilnius Gediminas Technical University (VGTU) Press Technika. Source

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