Thermodynamic parameters of mixtureswith silicon nitride under shock-wave loading

Maevskii, K. K.

doi:10.20948/mathmontis-2019-45-4

Cited by 6 publications

(4 citation statements)

References 42 publications

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“…Для описания термодинамических параметров сплавов и смесей при ударно-волновом воздействии используется модель TEC ударно-волнового нагружения с учетом наличия газа в порах [17,18]. Данная модель позволяет описать термодинамические параметры в широком диапазоне давлений при ударно-волновом нагружении для различных составов смесей и соотношений их компонентов [19][20][21], в том числе и тех смесей, компоненты которых испытывают полиморфный фазовый переход. Модель основана на предположении, что при ударноволновом нагружении все компоненты исследуемого образца находятся в термодинамическом равновесии.…”

Section: модель расчетаunclassified

Численное Исследование Ударно-Волнового Нагружения Металлических Композитов На Базе W И WC

Маевский¹

2021

Журнал Технической Физики

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The results of research on modeling shock-wave loading of metal composites – elkonites, which are sintered refractory materials tungsten, tungsten carbide or molybdenum impregnated with fusible metal silver or copper using thermodynamically equilibrium model TEC are presented. The investigation of the compressibility of such composites are related to the properties of the materials themselves and the possibility of creating samples based on them. Thermodynamic characteristics are calculated for these metals and compared with available data of shock-wave experiments. The model allows us to describe the dynamic loading of solid and porous alloys of various compositions such as Cu–W, Ag–W, Cu–WC, Ag-W. This model allows for targeted selection of material compositions of different porosity values and ratios of their components in order to obtain the specified characteristics for shock-wave loading of samples.

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Section: модель расчетаunclassified

Численное Исследование Ударно-Волнового Нагружения Металлических Композитов На Базе W И WC

Маевский¹

2021

Журнал Технической Физики

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“…The action of a short high-intensity laser pulse upon a target makes it possible to study the properties of the target material under shock-wave loading at a high strain rate [1][2][3][4][5][6][7][8][9]. Numerical modeling of such a process [2,3,6,[10][11][12][13][14][15][16] provides additional possibilities for the interpretation of the obtained measurement results.…”

Section: Introductionmentioning

confidence: 99%

Modeling of shock-wave processes in aluminum under the action of a short laser pulse

Semenov

Stuchebryukhov

Khishchenko

2021

MathMon

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A hydrodynamic model of shock-wave processes in a material under the action of a short high-intensity laser pulse is considered. The simulation is carried out for the case of an aluminum target 90 μm thick, irradiated by a laser pulse with a duration of 70 ps and a maximum intensity of 14.7 TW/cm2. In the corresponding laboratory experiment, on the rear side of the target after irradiation, a spall of a part of the material is recorded at a depth of 10±1 μm. Calculation of the time dependence of the pressure and density of aluminum in the spall plane makes it possible to determine the tensile strength of aluminum at a high strain rate.

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“…It represents the phonon contribution to equations of state of solids as an interpolation between limiting cases of low and high temperatures . Equations of state of matter are necessary for analysis and numerical simulation of physical phenomena under extreme conditions of high temperatures and high pressures [19,[26][27][28][29][30][31][32][33][34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Analytic approximation of the Debye function

Khishchenko¹

2020

MathMon

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An expression in a closed form is proposed for the approximation of the Debyefunction used in thermodynamic models of solids. This expression defines an analytic functionthat has the same limiting behavior as the Debye function at low and high temperatures. Theapproximation gives the maximum relative deviation from the value of the Debye function lessthan 0.001. The proposed expression can be useful in the equations of state of solids in a widetemperature range.

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Thermodynamic parameters of mixtureswith silicon nitride under shock-wave loading

Cited by 6 publications

References 42 publications

Численное Исследование Ударно-Волнового Нагружения Металлических Композитов На Базе W И WC

Численное Исследование Ударно-Волнового Нагружения Металлических Композитов На Базе W И WC

Modeling of shock-wave processes in aluminum under the action of a short laser pulse

Analytic approximation of the Debye function

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