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Roll Pass Design Development with SPLEN(Rolling) Computer Software
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 the development of new roll pass design, which almost halved the maximum value of local plastic deformation in the material during rolling. Since full 3D finite element method (FEM) based models needs significant amount of computer memory and CPU time, it was not suitable for the performed study, which involves a bulk of simulations with different initial conditions. Therefore, the quick algorithms for simulation of rolling processes, which based on so-called “2.5D” method, have been used. This method, due to number of simplifications, is significant faster than conventional 3D FEM, and at the same time it allows to reach good accuracy of the model. The developed computer software SPLEN(Rolling) which implements “2.5D” FEM simulations was applied for computations and analysis of the results. This software is able to predict the shape evolution of rolled material, as well as distributions of strain, strain rate and temperature within the volume of deformation zone. It has been shown that computer simulation based on “2.5D” FEM implemented in SPLEN(Rolling) software can be efficiently used for roll pass design development and optimization.
Chumachenko E. N., Aksenov S. A., Logashina I. V., 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 ...
Added: April 12, 2012
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
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
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
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
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
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
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
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
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
Aksenov S. A., Chumachenko E. N., Osipov S. et al., Procedia Engineering 2014 Vol. 81 P. 1017-1022
This study proposes a method for determining the material constitutive equations and optimal forming conditions on the basis of free bulging tests. The blow-forming tests were carried out at the temperature of 420 °C using aluminum alloy (AMg-6) sheets of a 1 mm thickness. Each test was performed at constant pressure. For each fixed value ...
Added: October 16, 2014
Bakanov V. M., Производство проката 2014 № 12 С. 3-7
The application of mathematical modeling methods (with subsequent computer sales) to determine the parameters of accuracy geometry bands obtained with the new equipment and process the step deformation bands of hard alloys based on copper ...
Added: February 24, 2014
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
Центр информационных технологий в проектировании РАН, 2019
Представлены труды международной научно-технической конференции «Информационные технологии и математическое моделирование систем» (председатель организационного комитета - академик В.В. Козлов; сопредседатель - академик Ю.В. Гуляев) по направлениям: 1. Математическое и имитационное моделирование. 2. Информационные технологии в проектировании систем. 3. Программирование искусственного интеллекта в приложениях. 4. Современные технологии в оптоэлектронных системах. Труды конференции отражают последние достижения науки в ...
Added: December 22, 2019
Zakhodiakin G., Павленко В. А., Успехи в химии и химической технологии 2011 Т. XXV № 13 (129) С. 10-15
В статье рассмотрен практический пример применения методологии оценки жизненного цикла для анализа и стратегического планирования цепи поставок нефтехимического предприятия на примере производства полиолефинов из «жирного» природного газа. Описана структура цепи поставок в производстве полиолефинов, проведены инвентаризационный анализ и оценка воздействия жизненного цикла полиолефинов. Результаты инвентаризационного анализа и оценки воздействия жизненного цикла используются в модели для ...
Added: February 2, 2013
Зимина Е. Ю., Статистика и Экономика 2018 Т. 15 № 2 С. 30-37
The article includes the observation of the cluster analysis of medical
data on the example of the cardiac data. One of the main effective
and commonly used Data Mining methods that applied to the large
amounts of information (for example, mathematical economics) are
clustering methods: the search for signs of similarity between objects
in the study of the subject area ...
Added: May 29, 2018
Visco S., Nimon V. Y., Petrov A. et al., Journal of Solid State Electrochemistry 2014 Vol. 18 No. 5 P. 1443-1456
Abstract The extremely high theoretical energy density of the lithium-oxygen couple makes it very attractive for next-generation battery development. However, there are a number of challenging technical hurdles that must be addressed for Li-Air batteries to become a commercial reality. In this article, we demonstrate how the invention of water-stable, solid electrolyte-protected lithium electrodes solves ...
Added: March 16, 2015
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
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
Chumachenko E. N., Aksenov S. A., Bober S. A., Методи розв'язувания прикладних задач механiки деформiвного твердого тiла 2010 № 11 С. 299-304
Статья посвящена способам задания контактного взаимодействия при моделировании задач обработки металлов давлением. Проведено сравнение наиболее распространенные зависимости, применяемые для описания контактного взаимодействия. Предложен метод быстрой реализации трения при имитационном моделировании с помощью метода конечных элементов. Сравнение результатов использования различных законов трения при описании контактного взаимодействия в задаче выдавливания цилиндрических заготовок из титанового сплава ВТ3 1 ...
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
Gabeydulin R., Труды ГосНИИАС. Серия: Вопросы авионики 2018 № 2(35) С. 39-53
The paper presents a brief introduction to the air traffic flow management problem, describes main terms, rules and also describes the main approaches for solving the problem. Author describes how flow management systems work in Europe, USA and in the Russian Federation. Author proposes a fast greedy algorithm for solving flow management problem defined in ...
Added: March 22, 2018
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
Tikhonov А. N., Uvaysov S. U., Ivanov I. et al., Прикаспийский журнал: управление и высокие технологии 2016 № 4 С. 144-154
In the paper has been proved the actuality of solving the problem of vibratory diagnosis of printed board assembly.
Also has been developed the method of diagnosis of mechanical defects of electronic means, which is based on a new approach to give harmonious effect on the printed board assembly or construction elements. The peculiarity of the ...
Added: November 17, 2016