DYNAMIC LOADING AND THE PROBLEM OF STRENGTH

Morozov N.F., Academichian of the RAS, St. Petersburg State University, St. Petersburg, Russia

Petrov Yu.V., Corresponding Member of the RAS, St. Petersburg State University, St. Petersburg, Russia

Smirnov V.I., St. Petersburg State University of Communications, St. Petersburg, Russia

An analysis of dynamic behavior of the threshold characteristics of rock samples with the macrocrack. Found that for each breed there is an optimal duration of loading, which allows to minimize the costs of fracture. Showed fundamentally different behavior of the dynamic viscosity of fracture at threshold, and supercritical loads. Analysis is made on the basis of structural-time approach.

dynamic loading, dynamic viscosity, supercritical loads

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