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Математическое моделирование и энергосбережение при прокатке в калибрах
Металлург. 2010. № 8. С. 34-37.
The paper describes the method of finite element simulation of shape rolling process based on 2,5D techniques which is due to the number of simplifications, allows to increase the rate of calculation considerably (by comparison with 3D modeling). To verify this technique the comparison of model results with data obtained at the metallurgical plant Trinecke Zelezarny within the special industrial testing was performed. The comparison confirmed the adequacy and effectiveness of the proposed models and computer system developed on their basis.
Chumachenko E. N., Aksenov S. A., Logashina I. V., Metallurgist 2010 Vol. 54 No. 7-8 P. 498-504
Energy conservation during hot shape rolling can be achieved by reducing of working temperature, optimization of rolling speed and calibration schedules, including a reduction of the passes number. For this, at the design stage of technology, it is necessary to produce a targeted search of the optimum characteristics associated with the large number of preliminary ...
Added: April 12, 2012
Aksenov S. A., Chumachenko E. N., Logashina I. V. et al., Hutnické listy 2010 No. 4 P. 110-113
The technological process considered in the paper is a rolling of a round bar in roughing mill group, which consist of four passes. The computer simulation of the process shows that the local plastic deformations occurring in the material are extremely large, which may lead to the appearing of defects. The investigations performed, led to ...
Added: April 12, 2012
Chumachenko E. N., Logashina I. V., Zakhariev I., Металлург 2016 № 4 С. 102-105
The paper is devoted to simulation, analysis and optimization of a forging technology for manufacturing of titanium sections of high-pressure apparatuses. Computer simulation of material forming during the forging was performed using finite element method. The punching force evolution was study as well as deformation uniformity of the product walls, fillability of the dies and ...
Added: May 17, 2016
Presnova A., Качество. Инновации. Образование 2016 № 2 С. 31-40
In this paper, using the theory of differential games developed the algorithm of constructing guaranteed control for nonlinear systems. Through the transition from the nonlinear model to model the linear form with parameters that depend on the state, will move from finding solutions to equations of Hamilton-Jacobi-Bellman equation to the Riccati equation. Moreover, the appointment ...
Added: May 3, 2016
Fedorenko S., СПб. : ГУАП, 2008
Fast algorithms for decoding of linear block codes. ...
Added: February 3, 2018
Zakhariev I., Aksenov S. A., Logashina I. V., Металлург 2016
The paper is oriented toward the problem of superplastic materials characterization using free bulging testing. This experimental technique allows one to study the material flow behavior in conditions of biaxial tension which is very close to the ones occurring during hot gas forming. The interpretation of the results is proposed to perform by inverse analysis ...
Added: June 19, 2016
Puzino Y. A., Вестник Чувашского государственного педагогического университета им. И.Я. Яковлева. Серия: Механика предельного состояния 2014 № 22 С. 46-52
The increasing of the efficiency of technological modes of steel products manufacturing requires simulation of metal forming during hot deformation. To obtain correct results, one should set the correct initial and boundary conditions, including the mechanical properties of materials, which represent the dependence of the stress-strain and strain rate at maintained temperature.
In the experiments one ...
Added: January 19, 2015
Sergei Valentinovich Fedorenko, / Preprint. Series Preprint "Preprint". 2016.
In this preprint, we present an example illustrating the novel method for the discrete Fourier transform (DFT) computation based on the Goertzel-Blahut algorithm introduced in the paper "Improving the Goertzel-Blahut algorithm" (IEEE Signal Processing Letters, vol. 23, no. 6, pp. 824-827, 2016). ...
Added: February 3, 2018
Soloviova (Solovieva) T. I., Belov A. V., Системотехника: Системные проблемы надежности, качества и информационных технологий 2012 № 10
The aim and the features of master program “Smart laser navigation systems” in MIEM of NRU HSE are described. Participation of research and development institute “Polyus” named by M.F.Stelmakh in creation and fulfillment of the master program is considered as an approval of actuality of the suggested applied education concept for Russian renewed technologies. ...
Added: January 18, 2013
Chumachenko E. N., Logashina I. V., Качество. Инновации. Образование 2010 № 11 С. 30-35
Researches are devoted to computer techniques and information technologies based on mathematical modeling of mechanical systems and technological processes of metal forming. Techniques are intended for improvement of quality of designing of new technological processes and ways of their improvement. ...
Added: April 12, 2012
[б.и.], 2018
Научное электронное издание подготовлено Институтом проблем управления РАН и Московским государственным университетом имени М.В. Ломоносова с целью развития и пропаганды достижений современной теории управления. В сборнике трудов научной конференции доклады представлены в виде статей по следующим направлениям:
•Математика и компьютерные науки в междисциплинарных исследованиях,
•Методы экспериментальной и теоретической физики в междисциплинарных исследованиях,
•Математическое моделирование глобальных процессов,
•Количественные модели и ...
Added: September 19, 2018
Zakhariev I., Aksenov S. A., Journal of Chemical Technology and Metallurgy 2017 Vol. 52 No. 5 P. 1002-1007
Free bulging process is an experimental technique which can be used to characterize a sheet material in conditions of biaxial tension during hot forming. Analytical and semi-analytical models of this process are usually based on the hypothesis offering certain relations between the geometrical characteristics of a bulge during forming. The paper presents an original relation ...
Added: December 11, 2016
Cherkashina T., Mazur I., Aksenov S. A., Materials Science Forum 2013 Vol. 762 P. 261-265
Numerical and physical simulation on model samples can provide data for various aspects of metal forming, without resorting to time-consuming and costly full-scale tests. This paper presents examples of modeling of the deformation of a slab with a liquid core. The use of soft reduction can enhance the homogeneity of the structure, which improves the ...
Added: October 7, 2013
Logvenkov S. A., Биофизика 2011 Т. 56 № 3 С. 512-519
The continuum model of radial mass transfer in plant roots we developed previously is used for processing the nonstationary experiments aimed at the determination of the root hydraulic conductivity. It is shown that in contrast to compartmental models our model allows to describe the observed shape of the relaxation curve and to obtain segments with ...
Added: November 24, 2012
Novikov P., Ларионов В. И., Сущев С. П. et al., Вестник кибернетики 2017 № 2 (26) С. 44-50
The effects of some natural and artificial factors on the thermal interaction between a pipeline and permafrost soil has been studied. A mathematical model describing the soil temperature profile, thawed soil subsidence and pipeline elevation has been proposed. A temperature profile of the soil around the pipeline has been determined through solving the heat conductivity ...
Added: December 10, 2017
Воронеж : Элит, 2012
В трудах XIII Всероссийской научно-технической конференции и школы молодых ученых, аспирантов и студентов отражены вопросы управления космическими аппаратами, технологической механики и механики деформируемого твердого тела, тепломассообмена, математического моделирования, автоматизированного проектирования и управления процессами разработки и производства летательных аппаратов и двигательных установок авиационной и космической техники. Опубликованные материалы соответствуют научному направлению "Наукоемкие технологии в машиностроении, авиастроении, ...
Added: February 9, 2013
М. : МИЭМ, 2010
В сборнике представлены тезисы докладов участников XVIII Международной студенческой конференции-школы-семинара «Новые информационные технологии», состоявшейся в мае 2010 года.
Сборник состоит из двух разделов. Первый раздел сборника включает пленарные доклады ведущих специалистов. Второй раздел содержит тезисы докладов студентов и аспирантов, учащихся техникумов и колледжей, участвовавших в работе школы-семинара. ...
Added: April 12, 2012
Подиновская О. В., Информационные технологии моделирования и управления 2010 № 1(60) С. 71-80
Статья рассказывает о принятии многокритериальных решений с использованием метода анализа иерархий. Метод Анализа Иерархий (МАИ) — математический инструмент системного подхода к сложным проблемам принятия решений. МАИ не предписывает лицу, принимающему решение (ЛПР), какого-либо «правильного» решения, а позволяет ему в интерактивном режиме найти такой вариант (альтернативу), который наилучшим образом согласуется с его пониманием сути проблемы и требованиями ...
Added: October 21, 2012
Chumachenko E. N., Nazirov R., Erokhina O., Космические исследования 2010 Т. 48 № 6 С. 568-572
The influence of different forms of housing cryobot speed and efficiency of movement them into the ice structures. The problems of cryobot to study the ice surface in Europe ...
Added: April 12, 2012
Chumachenko E. N., Nazirov R., Logashina I. V. et al., Космические исследования 2011 Т. 49 № 4 С. 392-397
We discuss the materials associated with the formation of chaotic bands on the ice surface on Europe, a satellite of Jupiter. There are suggestions as to their origin. ...
Added: April 12, 2012
Andreevskaya T. M., Bogachyov K., М. : Московский государственный институт электроники и математики, 2013
Приводится описание лабораторных работ и рабочего места при их проведении, даются основные рекомендации по математическому и схемотехническому моделированию, необходимые для выполнения экспериментальной части работ. ...
Added: February 19, 2014
Andreevskaya T. M., Bogachyov K., М. : Московский государственный институт электроники и математики, 2013
Приводится описание лабораторных работ и рабочего места при их проведении, даются основные рекомендации по математическому и схемотехническому моделированию, необходимые для выполнения экспериментальной части работ. ...
Added: February 19, 2014
Zakhariev I., Aksenov S. A., Logashina I. V., Letters on Materials 2017 № 1 С. 49-54
The paper is oriented toward the problem of determination of rheological characteristics of a material by free bulging testing. This information about the material behavior is used for design of gas forming technologies for production of complex shell parts used in aerospace industry. Realization of such technologies requires pressure forming regimes which can be calculated ...
Added: March 14, 2017