caa a22 4500 475810775 CHVBK 20180406123758.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/BF02699529 doi (NATIONALLICENCE)springer-10.1007/BF02699529 The dynamic behavior of polytetrafluoroethylene in reshock and unloading waves [Elektronische Daten] [S. Karakhanov, S. Bordzilovskii] The behavior of polytetrafluoroethylene under loading by a shock wave and a wave of a complicated structure that consists of a shock wave, subsequent loading, and a rarefaction wave is studied. The front structure that includes a stress jump up to 0.92-0.95 of the equilibrium amplitude and a stress-relaxation zone whose duration is up to 0.5 μsec was recorded. The velocity measurements for the selected points with constant levels of stress in the wavefront show that the reshock wave moves over the shock-compressed polymer in a stationary regime. The phase trajectories of change in the polytetrafluoroethylene state in the coordinates of gauges on the "stress-specific volume” diagrams, which were obtained using the Lagrangian analysis of the stress profiles, show the marked effect of the hysteresis upon variation of the direction of loading of the sample. Depending on the magnitude of the hysteresis, the shear stresses were estimated to be (0.6±0.3) and (0.3+0.15) GPa at dynamic stresses of 18.5 and 32.5 GPa, respectively. Kluwer Academic/Plenum Publishers, 2000 Karakhanov S. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut Bordzilovskii S. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut Combustion, Explosion and Shock Waves Springer US 36/5(2000-09-01), 650-659 0010-5082 36:5<650 2000 36 10573 https://doi.org/10.1007/BF02699529 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02699529 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karakhanov S. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut NATIONALLICENCE 700 1- Bordzilovskii S. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut NATIONALLICENCE 773 0- Combustion, Explosion and Shock Waves Springer US 36/5(2000-09-01), 650-659 0010-5082 36:5<650 2000 36 10573 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer