ИСТИНА

In the process of solving problems of mechanics when a critical state occurs in some areas of the material, it is important to understand not only the nature of the behavior of the entire structure, but also of the material itself in local zones of the critical state. In this work, using the method of discrete-continuum modeling, a rod model of the hexagonal plane of carbon is constructed. The behavior of the microstructure of a deformable solid is investigated to determine the internal parameter responsible for the growth of microdamages in an elastic-brittle material. The used rod model of the interaction of microstructural elements can be used both to describe the covalent interaction of atoms and to describe the interaction of molecules, crystals, and grains. The systems will be sequentially applied to different static loads, the deformation of the structure occurs in the plane under the assumption of small deformations. The fracture of the rods occurs only under tension and is described by the Morse potential. As a result of a series of numerical experiments, the process of loading a rod system is presented, which will deform in the same way as an atomic system in the molecular dynamics model. The curves of the growth of the damage parameter were plotted for several tested systems. The constructed model makes it possible to determine the direction of crack development at the macrolevel.