ESTIMATION OF THE MODULUS OF THE VECTOR OF DISPLACEMENTS IN THE PROCESS OF SIMULTANEOUS FORMATION OF CRACKS IN THE COMPOSITES

摘要

We propose a computational model of the emission of acoustic signals accompanying the fracture processes in composite materials caused by the formation of several cracks regarded as separate events of macrocrack initiation. We perform the numerical analysis of the components of the vector of displacements for some typical cases of the relative location of two simultaneously formed penny-shaped cracks. The analysis of the modulus of the vector of displacements reveals the direct proportionality between its maximum values and the total area of the formed defects that, as well as the inverse proportionality between the same quantities and the period of relaxation of stresses on the cracks lips.