We present simulations of dynamic ruptures in a continuum damage–breakage rheological
model and waves radiated by the ruptures and observed in the far field. The propagating
rupture produces rock damage and granulation in the process zone ahead of the rupture
front. An expansion–compaction process in the process zone leads to an isotropic source
term, while shear motion that accumulates behind the propagating front produces a
deviatoric source term and shear heating behind the rupture front. The process zone …

We present simulations of dynamic ruptures in a continuum damage-breakage rheological
model and waves radiated by the ruptures observed in the far field. The model combines
aspects of a continuum viscoelastic damage framework for brittle solids with a continuum
breakage mechanics for granular flow. The brittle instability is associated with a phase
transition between a damaged solid with distributed cracks and a granular medium within
the generated rupture zone. The formulation significantly extends the ability to model brittle …