Ductile fracture of materials with randomly distributed voids

A reliable determination of the onset void coalescence is critical to modelling ductile fracture. Numerical models have been developed but rely mostly on analyses single defect cells, thus underestimating interaction between voids. This study aims provide first extensive analysis response microstructures with random distributions voids various loading conditions and characterize dispersion results as a consequence randomness distribution. Cells embedding distribution identical spherical are generated within an elastoplastic matrix subjected macroscopic constant stress triaxiality Lode parameter under periodic boundary in finite element simulations. The failure cell determined by new indicator based loss full rankedness average deformation gradient rate. It shown that strain field developing one unit cells feature different dependencies L owing modes. Depending L, may fail extension (coalescence) or shear. Moreover populations lead significant strain, which present even simulations high numbers