Modeling of structural damage evolution in filled elastomers with regard for interfacial interaction

Computer modeling of internal damage evolution in elastomeric composites with high structural phase heterogeneity (hard dispersed filler and soft elastomeric matrix) was carried out. The concentration of particles was such that their mutual influence significantly affected the strength properties of the material. Dispersed inclusions were considered absolutely rigid and durable. Only a finite deformable incompressible matrix could be damaged, the mechanical properties of which were set using the neo Hookean elastic potential. In this case, such features of the composite structure were taken into account as a high stress concentration in the gaps between closely located inclusions, the presence of elastomeric layers with increased stiffness on the surface of filler particles, interphase contact conditions (full adhesion or slippage at "inclusion-matrix" boundaries) and the possibility of anisotropic hardening of the elastomer during uniaxial stretching (due to the reorientation of molecular chains in the direction of elongation)...