Open AccessNumerical simulation of solid-phase chemical transformations in thermite mixtures under shock-wave loading
Author(s) -
Oxana Ivanova,
Roman O. Cherepanov,
С. А. Зелепугин
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2154/1/012005
Subject(s) - thermite , shock wave , materials science , shock (circulatory) , mechanics , amplitude , phase (matter) , thermodynamics , oxide , composite material , aluminium , chemistry , metallurgy , physics , medicine , organic chemistry , quantum mechanics
Shock-wave loading of a steel cylindrical ampoule that contained an aluminum-copper oxide(Al/CuO) thermite mixture is simulated in three-dimensional space using the SPH method.The chemical reaction starts after the performance of the criterion on temperature or pressure.Thechemical reaction equations are integrated using the first-order Euler method.The elastic-plastic flow is calculated using the variational formulation.The numerical study of solid-phase chemical transformations in the Al/CuO thermite mixture under shock-wave loading shows that the initiation of reactions in the shock wave,further development,and completion depends significantly on the amplitude and duration of the shock wave.Sub-critical pressure pulse can lead to an incomplete reaction or incompletely compacted final product.