?
Inverse analysis of plane strain and uniaxial compression tests performed on Gleeble
.
Plane strain and uniaxial compression tests are generally used for characterization of a material constitutive behavior during hot forming. Interpretation of the results obtained by such tests is complicated by flow inhomogeneity occurring in a specimen volume and temperature variations. Inverse analysis is an effective instrument allowing one to take these factors into account and obtain more accurate constitutive equations of a material. In this study the constitutive behavior of HC420LA steel was examined by plane strain and uniaxial compression testing on Gleeble 3800. Finite element simulation of the tests was performed in order to evaluate the flow inhomogeneity and its effect on stress-strain curves obtained as a result of testing. Inverse analysis was used to correct the initial Gleeble data and obtain accurate constitutive equations of the material.
In book
Brno: TANGER, 2015.
Dmitriy Demin, Ilya Grebenkin, Alexey Barinov, International Journal of Advanced Manufacturing Technology 2025 Vol. 141 P. 1847–1858
In this paper, a computer simulation of round wire drawing processes with different equations of state for steel A12 has been carried out. In addition, the methods of improving the configuration of neural networks based on a multilayer perceptron (MLP) for estimating the distributions of residual stress tensor components have been investigated. The study demonstrated ...
Added: November 6, 2025
Mikolaenko V., Анохин В. В., Кудряшов М. Д., В кн.: Межвузовская научно-техническая конференция студентов, аспирантов и молодых специалистов имени Е.В. Арменского. Материалы конференции.: М.: МИЭМ НИУ ВШЭ, 2022.
Сверхпластическая газовая формовка – это один из способов обработки материалов давлением, используемый при производстве тонкостенных изделий сложной геометрической формы. Для проектирования технологических режимов производства таких изделий используется компьютерное моделирование технологического процесса, для которого необходимо задать свойства материала. Основной экспериментальный метод исследования свойств сверхпластичных материалов – одноосное растяжение плоских образцов с постоянной скоростью деформации. Однако, стандартная ...
Added: December 12, 2024
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
Razorenova A., Yavich N., Malovichko M. et al., , in: Machine Learning in Clinical Neuroimaging and Radiogenomics in Neuro-oncology. Third International Workshop, MLCN 2020, and Second International Workshop, RNO-AI 2020. Lecture Notes in Computer ScienceVol. 12449: Machine Learning in Clinical Neuroimaging and Radiogenomics in Neuro-oncology.: Springer, 2020. Ch. 5 P. 45–55.
Electroencephalography (EEG) is a well-established non-invasive technique to measure the brain activity, albeit with a limited spatial resolution. Variations in electric conductivity between different tissues distort the electric fields generated by cortical sources, resulting in smeared potential measurements on the scalp. One needs to solve an ill-posed inverse problem to recover the original neural activity. In this article, ...
Added: December 10, 2020
Razorenova A., Yavich N., Malovichko M. et al., / Series 005140 "Biorxiv". 2020.
Electroencephalography (EEG) is a well-established non-invasive technique to measure the brain activity, albeit with a limited spatial resolution. Variations in electric conductivity between different tissues distort the electric fields generated by cortical sources, resulting in smeared potential measurements on the scalp. One needs to solve an ill-posed inverse problem to recover the original neural activity. ...
Added: November 10, 2020
Demin D., Procedia Manufacturing 2019 No. 37 P. 335–340
Residual stresses arising in the drawing process have a significant impact on the quality of the cold-drawn wire. Knowledge of residual stresses and their distribution makes it possible to predict the behavior of metal products under operating loads and to prevent their possible destruction. In this regard, it is necessary to adjust the main parameters ...
Added: February 4, 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
Zhuchkova T., Aksenov S. A., Shkatov V. et al., Journal of Chemical Technology and Metallurgy 2018 Т. 53 № 2 С. 354–359
The article shows an influence of kind of tests on material hot defamation behaviour during physical modelling on
Gleeble 3800. As material, high-strength low-alloy automobile steel HC420LA was used. Stress-strain curves and material constants based on results of flow stress and plain strain tests were calculated and compared. Besides finite-element modeling of rolling round bar on ...
Added: December 26, 2019
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
Aksenov S. A., Kolesnikov A., Mikhaylovskaya A., Journal of Materials Processing Technology 2016 Vol. 237 P. 88–95
Uniaxial tensile testing is a most common way of obtaining the information about the constitutive behavior of a material during gas forming. At the same time for industrial applications it is important to know the material behavior in a biaxial tension mode, which is much closer to the one realized in a shell during forming ...
Added: December 7, 2015
Жучкова Т. С., Aksenov S. A., Кавалек А. et al., Сталь 2015 № 9 С. 36–41
Hot forming behavior of high-strength automotive steel HC420LA is the main objective of this work. Uniaxial and plane strain compression tests were performed at Gleeble 3800 testing machine. A comparison of these types of tests was realized. The material constitutive constants were found as well as the dependences of peak and stady-state stresses on strain ...
Added: November 19, 2015
Puzino Y. A., Юшкин П. П., Aksenov S. A., 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. С. 133–137.
The simulation of metal behavior using hot deformation is hard, complex problem. That behavior depends on temperature, strain and strain rate. In the hot deformation processes, such as uniaxial compression test, the material inner structure is changing, one could see hardernin, dynamic recovery and, for some speciments, dynamic recristallization. The main aim of this work ...
Added: October 23, 2015
Aksenov S. A., Puzino Y. A., Kliber J. et al., Journal of Chemical Technology and Metallurgy 2015 Vol. 50 No. 6 P. 644–650
The paper is oriented toward the determination of constitutive equation constants by the inverse analysis of plane strain compression test results. The interpretation of such results is complicated by the inhomogeneity of strain rate distribution in the specimen caused by rigid ends, the lateral spreading of a specimen friction and the variation of temperature during ...
Added: October 23, 2015
Erokhina O., Chumachenko E., , in: Proceedings of the 2015 International Conference on Mechanics - Seventh Polyakhov's Reading.: IEEE, 2015.
This paper considers some problems related to penetration through thick ice layer and to study effectiveness of a melting probe like instrument for penetration through thick Jovians moon Europa icy surface. A melting probes movement model creation, verification and validation, as well as studying a melting process in general is discussed. To create the simulation ...
Added: March 16, 2015
Erokhina O., Бутенко А. Э., Chumachenko E., , in: 40th COSPAR Scientific Assembly. Held 2-10 August 2014, in Moscow, RussiaVol. 40.: [б.и.], 2014.
Nowadays planetary bodies' studies are of the great interest. First of all, such space objects are the icy moons of the giant planets like Jupiter and Saturn. Of particular interest is the relatively smooth Europa's surface that is covered by a bands system, valleys, and ridges. To study the planetary icy body in future space ...
Added: October 17, 2014
Erokhina O., Chumachenko E., , in: Geophysical Research Abstracts, 2014 EGU General Assembly 2014Vol. 16.: EGU General Assembly, 2014.
In modern space science one of the actual branches is icy satellites explorations. The main interest is concentrated around Jovian’s moons Europa and Ganymede, Saturn’s moons Titan and Enceladus that are covered by thick icy layer according to “Voyager1”, “Voyager2”, “Galileo” and “Cassini” missions. There is a big possibility that under icy shell could be ...
Added: October 17, 2014