Structural Viscosity of Solids
G. G. Savenkov and Yu. I. Meshcheryakov*
Federal State Unitary Plant "Krasnoznamenets," St. Petersburg 195043, sog@hotbox.ru;
*Institute of Machine Science, Russian Academy of Sciences, St. Petersburg 199004
Pages: 352-357
Abstract
Simple estimates of the coefficient of dynamic viscosity of some metals are considered. Experimental results on shock loading of aluminum, copper, and steel plane specimens are given. It is shown that the coefficient of dynamic viscosity depends on the characteristic size of the structural level of plastic strain at which loading-energy dissipation is considered. It was found that the main level that determines the viscosity of materials under high-velocity loading is the mesoscopic level with a characteristic size of ≈10 μm.
Key words: viscosity, high-velocity loading, mesoscopic level, interferogram.
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