Труды сотрудников ИВМ СО РАН

/ B. A. Balashov, G. G. Krushenko, Z. A. Vasilenko // Rasplavy. - 1996. - Is. 1. - P61-64 . - ISSN 0235-0106
Аннотация: To solve a problem of structure refinement of aluminum and deformable aluminum alloys in the cast workpieces, the method for producing the modifying compositions is elaborated by using the ultradispersed powders of titanium nitride and carbonitride with composition of 78.55Ti-21.45N and 76.1TiC-10.9N-7.0C mass.%. The pins are manufactured by composite pressing after smelting the powders with aluminum at 1380-1400В°C. The modifying master alloys are examined in semi-continuous casting A7 aluminum resulting the castings without hot cracks.

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Держатели документа:
VTs SO RAN, Krasnoyarsk, Russian Federation
ИВМ СО РАН

Доп.точки доступа:
Balashov, B.A.; Krushenko, G.G.; Крушенко, Генрих Гаврилович; Vasilenko, Z.A.

[Text] / A. Lukyanov [et al.] // 14th European Conference on the Mathematics of Oil Recovery 2014, ECMOR 2014. - 2014. - Ст. P27
Аннотация: Thermomechanical processes observing in deformable solids under intensive dynamic or quasi-static loadings consist of coupled mechanical, thermal and fracturing stages. The fracturing processes involve formation, motion and interaction of defects in crystals, phase transitions, breaking of bonds between atoms, accumulation of micro-structural damages (pores, cracks), etc. Irreversible deformations, zones of adiabatic shear micro-fractures are caused by these processes. A dynamic fracturing is a complicated multistage process, which includes appearance, evolution and confluence of micro-defects and formation of embryonic micro-cracks, pores that can grow and lead to the breaking-up of bodies with formation of free surfaces. This results in a need to use more advanced mathematical and numerical techniques. This talk presents modeling of irreversible deformation near the tip of a crack in a porous domain containing oil and gas during the hydraulic fracturing process. The governing equations for a porous domain containing oil and gas are based on constructing mathematical model of thermo-visco-elastoplastic media with micro-defects (micro-pores) filled with another phase (e.g., oil or/and gas). The micropores can change their size during the process of dynamical irreversible deformation. The existing pores can expand or collapse. The model was created by using the fundamental thermodynamic principles and, therefore, it is a thermodynamically consistent model. All the processes (i.e., irreversible deformation, fracturing, micro-damaging, heat transfer) within a porous domain are strongly coupled. Therefore, explicit normalized-corrected meshless method is used to solve the resulting governing PDEs. The flexibility of the proposed technique allows running efficiently using a great number of micro- and macrofractures. The results are presented, discussed and future studies are outlined.

Scopus


Доп.точки доступа:
Lukyanov, A.; Chugunov, N.; Sadovskii, V.M.; Садовский, Владимир Михайлович; Sadovskaya, O.V.; Садовская, Оксана Викторовна

/ B. D. Annin, V. A. Kovtunenko, V. M. Sadovskii // Springer Proceedings in Mathematics and Statistics. - 2015. - Vol. 121: 2nd International Conference on Applied Mathematics and Informatics, ICAMI 2013 (24 November 2013 through 29 November 2013, ) Conference code: 136889. - P49-56, DOI 10.1007/978-3-319-12583-1_3 . -
Аннотация: This contribution is devoted to the mathematical theory of elastoplastic and granular solids as well as the quasibrittle fracture of nonlinear cracks. Basic variational and hemivariational inequalities describing nonlinear phenomena due to plasticity, internal friction, interfacial interaction, and alike dissipative physics are outlined from the point of view of nonsmooth and nonconvex optimization. Primary results of the nonlinear theory and its application to solid mechanics are surveyed. © Springer International Publishing Switzerland 2015.

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WOS,
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Держатели документа:
Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
Institute for Mathematics and Scientific Computing, Karl-Franzens University of Graz, NAWI Graz, Heinrichstr. 36, Graz, Austria
Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk State University, Novosibirsk, Russian Federation
Institute of Computational Modeling, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Annin, B. D.; Kovtunenko, V. A.; Sadovskii, V. M.

/ B. Tarasov [et al.] // Solid State Phenomena : Trans Tech Publications Ltd, 2017. - Vol. 258 SSP. - P165-168, DOI 10.4028/www.scientific.net/SSP.258.165 . -
Аннотация: Recently a new fan-hinged shear rupture mechanism has been identified as a unique mechanism of dynamic shear ruptures. In the fan-mechanism, the shear rupture propagation is driven by a fan-shaped rupture head consisting of an echelon of intercrack (domino-like) blocks formed due to the consecutive creation of small tensile cracks in the rupture tip. The fan-structure propagates through the intact material as a wave and has a number of extraordinary features, one of which is extremely low shear resistance of the rupture head (below the frictional strength). Here we present a mathematical model elucidating the principles of this new mechanism. The model will support comprehensive studies of unique features of the discovered phenomenon. © 2017 Trans Tech Publications, Switzerland.

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Держатели документа:
The University of Western Australia, 35 Stirling Highway, Crawley, WA, Australia
Institute for Applied Mathematics FEB RAS, 5 Radio St, Vladivostok, Russian Federation
Institute of Computational Modeling SB RAS, 50/44 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Tarasov, B.; Guzev, M.; Sadovskiy, V.; Losev, A.

[Текст] : статья / Михаил Евгеньевич Артемьев, Павел Викторович Белолипецкий // Научный альманах. - 2016. - № 1-3. - С. 19-22, DOI 10.17117/na.2016.01.03.019 . - ISSN 2411-7609
   Перевод заглавия: Methods of designing multi-stage hydraulic fracturing using a web tool OptiFracMS
Аннотация: OptiFracMS (pengtools.com) - это инструмент проектирования оптимального мультистадийного ГРП для горизонтальной скважины. Для заданного набора свойств месторождения и имеющееся массы проппанта он вычисляет оптимальное число трещин и их геометрию для максимизации продуктивности пласта
OptiFracMS (pengtools.com) - a tool for the design of optimal multi-stage fracturing of horizontal wells. For a given set of properties of the deposit and having a weight proppant it calculates the optimum number of cracks and their geometry in order to maximize the productivity of the formation

РИНЦ

Держатели документа:
Институт вычислительного моделирования Сибирского отделения российской Академии Наук

Доп.точки доступа:
Белолипецкий, Павел Викторович; Belolipetskii P.V.

[Текст] : статья / Е. П. Ченцов // Решетневские чтения. - 2018. - Т. 1, № 22. - С. 589-591 . - ISSN 1990-7702
   Перевод заглавия: MODELLING OF WAVES PROPAGATION PROCESS IN FRACTURED COMPOSITE MATERIALS WITH LAYERED AND BLOCKY STRUCTURE

УДК

534-18

Аннотация: Исследуется процесс распространения трещин в материале, состоящем из упругих блоков, разделенных трещиноватыми прослойками. Разработанная модель позволяет описывать процессы деформации в композитных материалах с учетом структурных повреждений.
A process of cracks propagation in material consisting of elastic blocks, divided by fractured elastic interlayers, is under investigation. Developed model can be applied to describe strain processes in composite materials taking into account structural defects.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Ченцов, Е.П.; Chentsov E.P.