LAUSR

We propose a computational model of plane compact wedge-shaped specimens with stability regions of the stress intensity factor at the tip of an edge crack whose length increases. This model is used for the determination of the crack resistance of materials with regard for the influence of various operating factors. On the basis of the method of singular integral equations, we obtain the numerical solutions of model problems for wedge-shaped specimens subjected to uniaxial eccentric tension. We reveal the influence of the modes of loading of these specimens and their geometric parameters on the behavior of the stress intensity factor depending on the crack length and establish the ranges of the geometric parameters guaranteeing the presence of maximum stability regions for the stress intensity factor in the process of quasistatic crack growth.