Some dynamic problems of structural fracture mechanics

The problem of modeling of some of the specific effects of brittle fracture in the high loading rate conditions is discussed. An approach based on the system of fixed material constants describing macro-strength properties of the material is considered. New principles of material testing are analyzed. The corresponding incubation time criterion allows one to manage without the a priori given rate dependencies of dynamic strength and fracture toughness. New applications of the criterion to the problems of erosion and asymmetric impact loading are considered.