Development of multiple ordered fracture in an elastic homogeneous, structured and layered medium

ABSTRACT Mechanical models of a series of fracture processes accompanied by formation of structures of fracture (ordered systems of cracks (violations)) are presented. The models are based on the fracture mechanics concepts and account for an influence of an initial structure and texture of material (medium) and loading conditions. Attention is paid to the model of linear structures of fracture formation in a porous material (medium) under the combined action of compression and tension. An influence of various mechanisms of local brittle fracture in the vicinities of pores and microcracks on the material bearing capacity at complex stress state is considered. Possibilities of a hierarchy of echelon‐like crack systems formation near a macroconcentrator of stresses are illustrated by experiments on fracture near a macrocut (notch) of longitudinal shear. A model of the process is also discussed.