Peculiarities of evolutions of elastic-plastic shock compression waves in different materials

31st International Conference on Equations of State for Matter

Kanel, G.I.^1 ; Savinykh, A.S.^2,3 ; Garkushin, G.V.^2,3 ; Razorenov, S.V.^2,3 ; Ashitkov, S.I.^1 ; Zaretsky, E.B.^4

Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

Institute of Problems of Chemical Physics of the Russian Academy of Sciences, Academician Semenov Avenue 1, Chernogolovka, Moscow Region

142432, Russia^2

Tomsk State University, Lenina Avenue 36, Tomsk

634050, Russia^3

Ben Gurion University of the Negev, P.O.B. 653, Beer-Sheva

8410501, Israel^4

关键词: Elastic compression;    Elastic-Plastic;    Material structure;    Picosecond time;    Precursor waves;    Shock compressions;    Sonic wave propagation;    Strongly nonlinear;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012048/pdf
DOI  :  10.1088/1742-6596/774/1/012048

来源: IOP

【 摘 要 】

In the paper, we discuss such unexpected features in the wave evolution in solids as strongly nonlinear uniaxial elastic compression in a picosecond time range, a departure from self-similar development of the wave process which is accompanied with apparent sub-sonic wave propagation, changes of shape of elastic precursor wave as a result of variations in the material structure and the temperature, unexpected peculiarities of reflection of elastic-plastic waves from free surface.