Numerical Simulation and Experimental Study of Plastic Strain Localization under the Dynamic Loading of Specimens in Conditions Close to a Pure Shear

Bilalov, Dmitry; Sokovikov, Mikhail; Chudinov, Vasiliy; Oborin, Vladimir; Bayandin, Yuriy; Terekhina, A. I.; Naimark, Oleg

doi:10.1134/s0021894418070027

Cited by 21 publications

(16 citation statements)

References 10 publications

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“…The elastic-plastic invariant necessitates the allowance for the role played by elastic (lattice) characteristics of materials and is important in the development of models [22][23][24][25][26][27][28][29][30][31][32] and mechanisms of evolution of a plastic flow [33][34][35][36][37][38][39][40][41][42].…”

Section: Discussionmentioning

confidence: 99%

Localized Plastic Deformation and Periodic Table

Зуев¹

2020

GEOMATE

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We consider the autowave mechanism of evolution of a localized plastic deformation of crystalline solids of different origins. It is found that localization of the plastic flow is determined by the relation between elastic and plastic phenomena in deforming materials. The origin of this relation is explained using general thermodynamic concepts. It is shown that parameters of plastic flow localization at the stage of linear strain hardening in the process of solid body deformation are closely related to characteristics of the electronic structure of metals. Inverse of the product of wavelength and velocity of the localized plasticity autowave grows linearly with the number of conduction electrons per unit cell of the metal. The obtained data directly indicate that the nature of the electron-gas contribution to hindering of dislocations is more complicated. Thus, the parameters of plastic flow localization are defined by the position of metal in the Mendeleev periodic table.

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Section: Discussionmentioning

confidence: 99%

Localized Plastic Deformation and Periodic Table

Зуев¹

2020

GEOMATE

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“…Д.Р. Ледоном проведено численное моделирование проведенных экспериментов с учетом особенностей кинетики накопления микродефектов [13] и методами численного анализа определено значение средней скорости деформации при динамическом нагружении, которая принимает значение ̇= 5000 с -1 . Результаты численного моделирования показаны на рис.…”

Section: экспериментальные исследованияunclassified

“…Данные экспериментальных исследований, изучение структуры деформированных образцов, а также данные численного моделирования [9][10][11][12][13], проведенного с учетом особенностей кинетики накопления микродефектов в материале, позволяют предполагать, что механизм локализации пластической деформации для сплавов АМг6 и Д16 при реализованных условиях воздействия (статическое и динамическое нагружение) обусловлен структурными процессами в системе микродефектов.…”

Section: выводыunclassified

A study of plastic strain localization under static and dynamic loading using the StrainMaster non-invasive strain measurement system

Sokovikov¹

2021

Bulletin of Perm University. Physics

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Static and dynamic testing of specimens specially designed for studying the localization of plastic deformation in AMg6 and D16 alloys were performed on then electromechanical Testometric machine and split Hopkinson pressure bar using the StrainMaster system for noninvasive measurement of shape and deformation. Displacement and strain fields are plotted for special-shaped specimens of AMg6 and D16 alloys subjected to static deformation and dynamic loading. Comparison between the experimentally obtained strain fields and the results of numerical simulation made with account of the kinetics of microdefect accumulation in the examined material demonstrates good agreement to the accuracy of ~20%. The performed tests and their numerical simulation with consideration for the evolution of the defect material structure confirm the concept of the strain localization mechanism associated with the processes in the system of microdefects.

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“…В работе [9] было показано, что при исследуемых скоростях деформации (~10 3 с -1 ) и выше характерные времена теплопроводности для сплава АМг6 существенно меньше характерных времен процесса деформирования.…”

Section: экспериментальные исследованияunclassified

“…Данные экспериментальных исследований, изучение структуры деформированных образцов [7,9], а также данные численного моделирования [7,9], проведенного с учетом особенностей кинетики накопления микродефектов в материале, позволяют предполагать, что механизм локализации пластической деформации для сплава АМг6 при реализованных условиях нагружения не связан с термопластической неустойчивостью.…”

Section: выводыunclassified

Investigation of localized plastic shear under dynamic loading in a split Hopkinson pressure bar

Sokovikov¹

2019

Вест. ПГУ. Физ.

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Numerical Simulation and Experimental Study of Plastic Strain Localization under the Dynamic Loading of Specimens in Conditions Close to a Pure Shear

Cited by 21 publications

References 10 publications

Localized Plastic Deformation and Periodic Table

Localized Plastic Deformation and Periodic Table

A study of plastic strain localization under static and dynamic loading using the StrainMaster non-invasive strain measurement system

Investigation of localized plastic shear under dynamic loading in a split Hopkinson pressure bar

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