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Расчет пьезоактюаторов методом конечных элементов
Успехи современного естествознания. 2014. № 1. С. 45–47.
Вячеслав С., Ivashov E., Федотов К. Д.
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.
Language:
Russian
Shabanov N., Kuricheva O., Kurbatova J. et al., / Series Working Papers SSRN "Department of Economics Ca’ Foscari University of Venice". 2026.
The carbon balance of an ecosystem is the difference between Gross Primary Productivity (GPP) and Ecosystem Respiration (Reco) as expressed by Net Ecosystem Exchange (NEE). While remote sensing retrievals of GPP have reached maturity, Reco estimation remains underexplored and ultimately cast bias on NEE. Here we present an end-to-end multi-scale analysis of the mechanism of ...
Added: August 21, 2026
Ponomarenko A., / Series Computer Science "arxiv.org". 2025.
This paper addresses the challenge of merging hierarchical navigable small world (HNSW) graphs, a critical operation for distributed systems, incremental indexing, and database compaction. We propose three algorithms for this task: Naive Graph Merge (NGM), Intra Graph Traversal Merge (IGTM), and Cross Graph Traversal Merge (CGTM). These algorithms differ in their approach to vertex selection ...
Added: July 30, 2026
Piontkovski D., / Series arXiv "math". 2026.
A noncommutative projective variety is defined, following Artin and Zhang, by a graded coherent algebra 𝐴. The category of coherent sheaves is then the quotient qgr(𝐴) of the category of finitely presented graded modules by the subcategory of torsion modules. We consider the categorical and polynomial entropies of the Serre twist, that is, of the ...
Added: June 23, 2026
Piontkovski D., / Series arXiv "math". 2025.
If a symmetric multilinear algebra is weakly nil, then it is Engel. This result may be regarded as an infinite-dimensional analogue of the well-known Jacobian theorem, which states that if a polynomial mapping has a polynomial inverse, then its Jacobian matrix is invertible. This refines a theorem of Gerstenhaber and partially answers a question posed ...
Added: June 23, 2026
Shipilov F., Barnyakov A., Ivanov A. et al., / Series Physics "arxiv.org". 2026.
A fast simulation of the detector response is a vital task in high-energy physics (HEP). Traditional Monte-Carlo methods form the backbone of modern particle physics simulation software but are computationally expensive. We present a machine-learning-based approach to fast simulation of the Focusing Aerogel Ring Imaging Cherenkov (FARICH) detector response. Given a particle track and momentum, ...
Added: May 19, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Derkacheva A., Sakirkina M., Kraev G. et al., /. 2026.
Comprehensive data on natural hazards and their consequences are crucial for effective for risk assessment, adaptation planning, and emergency response. However, many countries face challenges with fragmented, inconsistent, and inaccessible data, particularly regarding local-scale events. To address this data gap in Russia, we developed an end-to-end processing pipeline that scrapes news from various online sources, ...
Added: April 28, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Gabdullin N., Androsov I., / Series Computer Science "arxiv.org". 2026.
Label prediction in neural networks (NNs) has O(n) complexity proportional to the number of classes. This holds true for classification using fully connected layers and cosine similarity with some set of class prototypes. In this paper we show that if NN latent space (LS) geometry is known and possesses specific properties, label prediction complexity can ...
Added: April 2, 2026
Sorokin K., Beketov M., Онучин А. et al., / arxiv.org. Серия cs.SI "Social and Information Networks ". 2025.
Community detection in complex networks is a fundamental problem, open to new approaches in various scientific settings. We introduce a novel community detection method, based on Ricci flow on graphs. Our technique iteratively updates edge weights (their metric lengths) according to their (combinatorial) Foster version of Ricci curvature computed from effective resistance distance between the ...
Added: January 15, 2026
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
М.: МАИ, 2021.
Сборник включает в себя научные работы, отражающие современные мировые достижения в вычислительной механике, механике деформируемого твердого тела, механике жидкости, газа и плазмы, аэрокосмической механике, прикладной математике, разработке прикладных программных средств.
Для специалистов в области прикладной математики и механики, математического моделирования, информационных технологий, разработчиков современных прикладных программных систем, аспирантов и студентов старших курсов технических вузов. ...
Added: February 18, 2022
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
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
Ростов н/Д, Таганрог: Издательство Южного федерального университета, 2018.
Сборник содержит научные доклады, представленные на XIX Международную конференцию «Современные проблемы механики сплошной среды» (Ростов-на-Дону, 15–18 октября 2018 г.).В сборнике представлены результаты исследований по моделированию деформирования тел из физически и геометрически нелинейных материалов, по устойчивости движений вязкой жидкости, аэрогидродинамике, описаны новые вычислительные технологии применительно к различным задачам механики, в частности, в механике контактных взаимодействий и ...
Added: February 27, 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
Vetrov V. A., Ivashov E., Федотов К. Д. et al., Вестник машиностроения, СТИН 2015 № 3 С. 3–10
The optimization of engineering solution of piezoactuator on multiple criteria using gradient method of quickest descent is suggested. The iterative procedure with search of minimum of displacement in direction to the minimum in constraint zone is considered. It is shown, that at development of bimorph elements of piezoscanner it is necessary to take into account ...
Added: April 23, 2015
Ivashov E., Федотов К. Д., Вестник машиностроения, СТИН 2014 № 6 С. 30–36
Principal schemes of piezoactuators and approach to design automation of piezomechanical devices based on known machine methods are considered. Machine experiment to estimate applicability of finite element method to design of piezoactuators is conducted. Technical solutions of piezoactuators with heat pipes and technical process control systems are proposed. Physical processes in heat pipes are described. ...
Added: October 26, 2014