ENERGY APPROACH TO THE EVALUATION OF THE LIMITING EQUILIBRIUM STATE OF ORTHOTROPIC CRACKED BODIES

摘要

We propose an energy criterion of crack propagation in anisotropic bodies based on the equation of energy balance at the onset of crack initiation. In this case, unlike the other well-known energy approaches, parallel with the equation specifying the limiting equilibrium of an anisotropic cracked body, we also use an additional equation for finding the direction of initial crack growth. The formulated criterion is applied to establish the limiting equilibrium state of an infinite ortho-tropic plate containing a rectilinear crack.