Èçäàòåëü: Èíñòèòóò ìåõàíèêè ìåòàëëîïîëèìåðíûõ ñèñòåì èì. Â.À. Áåëîãî Íàöèîíàëüíîé àêàäåìèè íàóê Áåëàðóñè, Ãîìåëü, Áåëàðóñü
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ÌÀÒÅÐÈÀËÛ. ÒÅÕÍÎËÎÃÈÈ. ÈÍÑÒÐÓÌÅÍÒÛ Èçäàòåëü: Èíñòèòóò ìåõàíèêè ìåòàëëîïîëèìåðíûõ ñèñòåì èì. Â.À. Áåëîãî Íàöèîíàëüíîé àêàäåìèè íàóê Áåëàðóñè, Ãîìåëü, Áåëàðóñü |
Summary: Two original methods of boundary value problems solution of the elasticity nonlinear theory are presented: fast converging iterative (3-4 iterations) and approximated analytical.
Leonenko D. V.
Local dynamic loading circular sandwich plates. pp. 8--13
Summary: Considered axisymmetric transverse fluctuations round springy sandwich plate under the action of local shallow and waited loads. For the kinematics description asymmetrical on the thickness of package accepted hypothesis's broken normal. Filler is light. The analytical deciding received with using a system of Heaviside functions. Conducted numeric analysis of tinning decisions.
Rusin N. M.
Features of the initial moment of process equal-channel angular extrusion of materials. pp. 14--18
Summary: With the purpose to research of material plastic flow features at the ECAE, the distortion of a coordinate grid put on a surface of samples of an alloy 1070 was investigated. The analysis of a coordinate grid distortions has shown that the initial moment ECA extrusion is characterized by presence non-uniform stressed-deformed condition of a material in the bottom part of a sample. In process of hardening of the pointed area the material plastic flow accepts the stable character, if the pressure, necessary for it, will surpass the resistance of friction forces about the channel bottom.
Chernous D. A., Petrokovets E. M.
Method of solution of large flexures of elastoplastic rod problem. pp. 19--22
Summary: A technique of solution of elastoplastic rod flexure problem with taking into account finite deflections based on subsequent approximations method has been developed. The technique allows one to take into account shear and tension-compression deformation, and also to perform calculations using Ilyushin's plasticity function. Maximal transverse displacements on force components acting on cantilever beam dependencies have been obtained.
Shcherba V. Ya., Levchenya Zh. B., Bumin G. L.
Stress state modeling of multiunit mechanical joints of mine conveyor transport. pp. 23--27
Summary: Mechanical joints of rubberized fabric conveyor belts are considered. Operation of conveyor joints has been analyzed in conditions of PO Belaruskaly.
Summary: The process of formation of composite materials produced by electrochemical method is studied. It is shown that the adsorption bond between particles of the disperse phase and metal of the matrix is formation.
Kashtalyan I. A.
Evaluation and selection of optimization criteria for control tasks of unfixed cutting processes at the machines with numerical program control. pp. 32--36
Summary: Comparative analysis of the basic criteria of the optimum cutting process is cited. The possibility of using the criterion of specific power consumption for evaluation of unfixed formation processes at the machines with numerical program control is grounded.
Obydenova T. N.
Investigation of the earth surface features at a repeated underworking of the third potassium horizon with account of underworking in RUP PO Belaruskaly mines. pp. 37--41
Summary: Processes of anticipated strata movement and deformations of the earth surface at repeated underworking of potassium mines with account of underworking time have been studied. The expected movements and deformations have been determined at potassium seam underworking at a depth of 773 m during time t (St = 0.80). An interrelation has been traced between subsidence, inclinations, curvature, horizontal movements and horizontal deformations in the movement trough. Obtained theoretical dependencies are in agreement with experimental results.
Fel'dshtein E. E.
Modelling of oscillatory processes in a zone of cutting while turning. pp. 42--47
Summary: The simulation model of oscillatory processes while turning of the console fixed shaft is considered. The possibility of occurrence of self-excited oscillatory process and undermining are shown. An influence of cutting conditions on amplitude of vibrations is established while turning the shaft from steel 45.
Summary: The problems of preparing and using of regulators of biological active preparations (BAP) in the forestry and vegetable growing are discussed. The questions connected to sources of their preparing, methods of retreatment of plant raw materials, efficiency of their using were considered. It was showed that the most ecological safe are the products of bioconversion and humification of plant lignocellulosic wastes. Humic acids and complexons of metals on the basis of they are the most perspective regulators of grow of plant.
Kuznetsov G. A., Lyopo V. A., Struk V. A., Skaskevich A. A.
Physical foundations of polymer modification by stratified mineral dopes. pp. 54--58
Summary: The mechanism of the orienting effect of active fragments of layered structures in polymer matrices has been substantiated based on the experimental results and analysis of charge formation and transfer in model stratified silicates. The formation of ordered regions within the polymer nanocomposite volume was shown to induce changes in physico-mechanical and thermofrictional properties of the complex.
Neverow A. S., Yakovuk S. G.
The investigation of the diffusions process in the system of the polymer-mixture of the solvents. pp. 59--62
Summary: The process of the diffusion of the steam from mixture of polar and nonpolar solvents through polymers cover has been investigated. It is shown that the diffusions permeability of the polymers cover is dependence from compositions of mixture of the polar and nonpolar solvents. On the basis of experimental facts it is shown that the diffusions permeability of the solvents is depended on the three-dimensional parameter of the dissolubility.
Nikitin O. V., Shcherbakov S. V.
Composite materials on the basis of sub-standard tanning filler (a review). pp. 63--67
Summary: Composite materials on a basis tanning waste products of shoe manufacture, and also technology of their reception and processing in products are considered. Possible directions of use in quality filler are given a tanning dust and waste products of a natural leather of large fractions.
Summary: The purpose of investigation was studying the rules of gasification and biogas composion out of anaerobic fermentation of different organic wastes arranged in laboratory anaerostat and pilot aggregate in recurring conditions. It's ascertained that gasification speed and biogas composion differs essentially depending on the waste's origin and their constitution A positive tendency is observed in increasing conversion of ashless substance of wastes due to their particular mixture.
Vasileva V. S., Vasilevskaya L. N., Dzivitskaya G. G., Ostrovskaya L. E., Ksenofontov M. A.
Influence pH of medium on spectral and kinetic characteristics of oxidation destruction of complex phenol compounds. pp. 72--75
Summary: Spectral and kinetic characteristics of complex phenol compounds oxidation whith ozone in the aqueous solutions were investigated by UV and IR spectroscopy. The influence pH of medium on the mechanism and kinetics of ozonation has been studied. Reaction rate constants were calculated at the initial moment of time. It was shown that the oxidation destruction of complex phenol compounds is followed by a formation of quinone compounds, oxyphenolic compounds, carboxylic acids and aldehydes. The mechanism and reaction rate depend from pH of medium. Optimal conditions for oxidation of phenol compounds were fixed.
Vereshchagin M. N., Goransky G. G., Kirilyuk S. I., Sycheva O. A.
Features attritor handling and electrobakings of promptly quenched iron-base alloys. pp. 76--80
Summary: Outcomes of examinations attritor handlings and electrobakings of dusts from fast - quenched precision iron-base alloys are submitted. It is shown, that attritor handling is one of the most efficient shapes of intensive termo-deformation action on a material. It is installed, that macro and a microstructure of fractures baked by an electric current it is model it is inhomogeneous, and its degree is determined by a state and a process engineering of deriving of initial dusts.
Kovalevskii A. A., Gluchmanchuk V. V., Tarasikov M. V.
Research of process plasma-enhanced diffusion of impurity in a layer of porous silicon. pp. 81--85
Summary: The process plasma-enhanced diffusion of an arsenic in a layer of porous silicon is investigated The high efficiency plasma-enhanced diffusion of an impurity in a layer of porous silicon in relation to other ways diffusion of an impurity in a layer of porous silicon is shown. Is established, that with volumetric plasma stimulation, the diffusion rate of an impurity in a porous layer of silicon depends on value of total pressure of gas environment, from size partial of pressure arsenic, in a case of the doping impurity arsenic, and also from strange bringing of the HF-power and temperature of a substrate with constant of a porosity of porous layer.
Petrovsky B. I., Prushak V. Ya., Shcherba V. Ya.
Partial stowing as a means of efficient controlling seam roof at selective excavation of the third potassium seam. pp. 86--91
Summary: Different process flowsheets of selective excavation are considered from the standpoint of their efficiency. Most promising flowsheet turned to be a selective excavation to a fall capacity of the seam which enables to exclude dynamic effects of the roof on the working area of the lava and most fully excavate minerals from the depths.
Prushak V. Ya., Shcherba V. Ya., Bashura A. N.
Analysis and choice of technological layouts for dissolving sylvinite at potassium chloride production by halurgical method. pp. 92--95
Summary: Choice of technological layouts for dissolving sylvinite at producing KCl by halurgical method is analyzed and substantiated. Based on calculation of dissolving time and account of side effects the cocurrent-countercurrent process flowsheet is given preference to.
Ruchai N. S., Grebenchikova I. A., Markevich R. M., Grits N. V., Dorogush V. M., Yankovskii Ch. Yu.
The technology of anaerobic local treatment of bobruysk hydrolysis alcohol plant wastewater. pp. 96--99
Summary: The process of anaerobic treatment of hydrolysis alcohol production wastewater was investigated at the biotechnology and bioecology department of BSUT. The possibility of formation of easily retainable compact sludge granules from microorganisms growing spontaneously in wastewater was shown. The technology of anaerobic local treatment of Bobruysk Hydrolysis Alcohol Plant wastewater was developed. The technology includes wastewater detoxication in the anaerobic combined bioreactor which is a combination of the anaerobic biofilter with fibrous carrier and the UASB reactor. This bioreactor provides the required purification level (70% COD) under organic loading rates 11-14 kg COD/m3• day.
Summary: Investigations have been carried out in the field of optimum organization of administration structure at a large-scale chemical company working in conditions of transient economy characteristic of modern Belarus and other SIC countries. A methodology has been elaborated of economic and organization substantiation of administration structure. The methodology has been tried at PO Belaruskaly which proved its efficiency at formation of administration structures for large-scale mine-chemical companies of vertical type.
Information. p. 104
Contents volume 7 (2002). pp. 105--107
Author indexes. p. 108