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Оценка скоростного диапазона криобота при его движении в ледяном массиве
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Erokhina O., Chumachenko E.
Language:
Russian
Dmitriy Demin, Ilya Grebenkin, International Journal of Advanced Manufacturing Technology 2024 Vol. 133 No. 7 P. 3461–3473
It is well known that residual stresses and accumulated deformations during drawing processes can influence mechanical properties of the resulting products. This paper proposes the use of machine learning methods, such as artificial neural networks (ANN) and polynomial regression, to gain insight into the nature of these distributions across the cross-section of round wires. The ...
Added: July 17, 2024
Кищик А. А., Aksenov S. A., Кищик М. С. et al., Физика металлов и металловедение 2023 Т. 124 № 6 С. 540–549
The effects of isothermal multidirectional forging (IMF) on the grain structure, second-phase particles of solidification origin, and dispersoids in the Al–4.9Mg–0.9Ni–0.9Fe–0.2Zr–0.1Sc alloy have been
investigated. The strain distribution over the sample volume during forging in a closed die has been analyzed
using a finite-element simulation. A method of considering the friction effect and changes in strain rate ...
Added: November 28, 2023
Синицын В. В., Rybchenko O., Ефимов В. Б. et al., Физика твердого тела 2023 Т. 65 № 8 С. 1307–1313
The article presents experimental studies of structural changes that occur during heating of nanosized powders of amorphous ice obtained by decay of a water-helium gel. Thermal annealing of the obtained samples was carried out by short exposures (about 15 minutes) at different temperatures in the range of 110-230K. The behavior of the amorphous phase during ...
Added: October 5, 2023
Yavich N., Koshev N., Malovichko M. et al., IEEE Transactions on Medical Imaging 2022 Vol. 41 No. 3 P. 647–656
For interpretation of electroencephalography (EEG) and magnetoencephalography (MEG) data, multiple solutions of the respective forward problems are needed. In this paper, we assess performance of the mixed-hybrid finite element method (MHFEM) applied to EEG and MEG modeling. The method provides an approximate potential and induced currents and results in a system with a positive semi-definite ...
Added: October 21, 2021
Царева О., Малова Х., Зеленый Л. et al., Океанологические исследования 2019 Т. 47 № 1 С. 129–131
Последние наблюдения, такие, как уменьшение напряженности магнитного поля, смещение магнитных полюсов и увеличение Южно-Атлантической аномалии, могут свидетельствовать о начале инверсии магнитного поля Земли. Согласно модели геомагнитного динамо, дипольная составляющая магнитного поля в момент инверсии обнулится и квадрупольная станет доминирующей. Для оценки возникновения радиационной опасности на поверхности Земли и в околоземном пространстве в момент инверсии магнитного ...
Added: June 3, 2021
Царева О., Попова Е. П., Popov V. et al., Астрономический вестник 2021 Т. 55 № 4 С. 334–340
It is believed that microscopic life may exist in the subglacial ocean of Europa, a moon of Jupiter. However, the radiation belts of Jupiter complicate the possibility of its exposure on the surface or at shallow depths. Using numerical simulations, we investigated the influence of the tilt of the Jupiter magnetic dipole, the Alwen wings, ...
Added: June 3, 2021
Aksenov S. A., Mikolaenko V., Metals 2020 Vol. 10 No. 10 Article 1353
Tensile testing is widely used for the mechanical characterization of materials subjected to superplastic deformation. At the same time, it is known that the obtained flow data are affected by specimen geometry. Thus, they characterize the specimen rather than the material. This work provides the numerical analysis aimed to study how the material flow behavior ...
Added: December 13, 2020
Malovichko M., Koshev N., Yavich N. et al., IEEE Transactions on Biomedical Engineering 2021 Vol. 68 No. 6 P. 1811–1819
Objective: This paper develops a novel approach for fast and reliable reconstruction of EEG sources in MRI-based head models. Methods: The inverse EEG problem is reduced to the Cauchy problem for an elliptic partial-derivative equation. The problem is transformed into a regularized minimax problem, which is directly approximated in a finite-element space. The resulting numerical method is efficient and easy ...
Added: November 10, 2020
Zakhariev I., Procedia Manufacturing 2019 Vol. 37 P. 85–90
Superplastic Forming is an industrial process to produce thin-walled products of complex shape. At the same time this process allows one to obtain the products with close to uniform thickness distribution. The process exploits the abilities of some polycrystalline materials to large elongations before failure. The best formability can be achieved only under very specific ...
Added: February 4, 2020
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
Erokhina O., В кн.: Материалы Всероссийской научной школы-конференции "Механика предельного состояния и смежные вопросы" , посвященной 85-летию профессора Д. Д. Ивлева (Чебоксары, 15–18 сентября 2015 г.): в 2 ч.Ч. 1.: Чебоксары: Чувашский государственный педагогический университет им. И. Я. Яковлева, 2015.
Melting probe is a probe that designed to melt through deep icy layer to study subsurface area. The paper considers an example of technique application to simulate melting probe's motion with following assessment of a melting probe's temperature influence on its penetration velocity. ...
Added: October 12, 2015
Чебоксары: Чувашский государственный педагогический университет им. И. Я. Яковлева, 2015.
Сборник включает материалы Всероссийской научной школы-конференции "Механика предельного состояния и смежные вопросы" , посвященной 85- летию профессора Д. Д. Ивлева, состоявшейся 15–18 сентября 2015 г. в ЧГПУ им. И. Я. Яковлева при финансовой поддержке Российского фонда фундаментальных исследований (проект № 15-31-10361 мол_г). ...
Added: October 12, 2015
Chumachenko E., Олесов Е. Е., Bober S. A. et al., Российский стоматологический журнал 2015 Т. 19 № 2 С. 4–5
Discusses the selection o f the design o f circuits fo r performing a large number o f calculations the selection ofdental orthopedic
treatment. It is shown that the segment o f the upper molar is possible to study such artificial inclusions, as ceramic inlays, with
the same degree o f reliability, as well as throughout the ...
Added: July 20, 2015
V. E. Shaposhnikov, Zaitsev V. V., Rucker H. O. et al., Journal of Geophysical Research 2013 Vol. 118 No. 7 P. 4248–4252
[1] Two very bright ultraviolet (UV) radiation sources (equatorial spots) which are located on the limb of Io near its equator have been detected in a series of observations with the Hubble space telescope. In this paper, we propose the mechanism that provides the sufficient energy of the equatorial spots to explain their high brightness ...
Added: December 27, 2014
Erokhina O., Chumachenko E., Вольнов И. Н., В кн.: XI Конференция молодых ученых «Фундаментальные и прикладные космические исследования»: тезисы докладов.: М.: ИКИ РАН, 2014.
При исследовании подледного пространства ледяных космических объектов (таких, как ледяные спутники Юпитера Европа и Ганимед, спутники Сатурна Титан и Энцелад) в будущих космических миссиях одна из возникающих задач – это создание прибора, способного проплавить ледяную толщу.
Одна из проблем, связанная с созданием такого прибора – это изучение его движения; изучение влияния рабочих параметров прибора на процесс ...
Added: October 17, 2014
Zlotnik Alexander, Zlotnik Ilya, / Series math "arxiv.org". 2014. No. arXiv:1405.3147.
We consider the Cauchy problem for the 1D generalized Schrödinger equation on the whole axis. To solve it, any order finite element in space and the Crank-Nicolson in time method with the discrete transpa\-rent boundary conditions (TBCs) has recently been constructed. Now we engage the Richardson extrapolation to improve significantly the accuracy in time step. ...
Added: May 14, 2014
Вячеслав С., Ivashov E., Федотов К. Д., Успехи современного естествознания 2014 № 1 С. 45–47
Base concepts of finite elements method are given. Machine experiment with piezoceramic actuator is made. Machine experiment results are compared with results of theoretical researches in current area. ...
Added: January 24, 2014
Sorlin S., Lajus J., , in: Media and the Politics of Arctic Climate Change: When the Ice Breaks.: NY: Palgrave Macmillan, 2013. Ch. 4 P. 70–92.
In this chapter we want to see what historical narratives can tell us in order to better understand our concerns with the vanishing ice as evidence of a current mega-transition. Was the 2007 minimum unique? When and why did science start to study Arctic sea ice? Have there been periods of an ice-free Arctic Sea ...
Added: November 17, 2013