Home – Home – Jornals – Fundamental and applied issues of mining 2021 number 2

Irreversible strain is believed to be formed under in-plane shears. Normal strain varies proportionally to a respective shear in directions perpendicular to shear planes. This approach makes it possible to consider fracturing and pore development without applying Kachanov - Rabotnov kinetic equation for damage. The model, based on the maximum shear stress and the exponential law, provided the grounds to solve the problems on strain and failure of an elastic-creeping body at the stages of nonstationary and stationary creep. Stresses, creep strains, fracture start time and complete failure time, as well as position of the fracture front and its development velocity at any time are determined for the structural elements under study.