Fracturing process in an anisotropic layered geomaterial: theoretical and computational predictions

Abstract. The present work investigates the fracturing behavior of an anisotropic layered geomaterial, known as Opalinus Clay (OPA). formation this rock is mainly related to a sedimentation process, where bedding planes correspond isotropy. OPA here studied because its good properties, primarily, low permeability and high adsorption capability, which make it perfect candidate for storage radioactive waste. characterization takes place experimentally in Mont Terri Rock Laboratory, northern Switzerland, with increased attention theoretical computational predictions. In context, aims at simulating nonlinear crack by using eXtended Finite Element Method (XFEM) damage mechanics. study applied on Semi-Circular specimen under Bending load (SCB), whose response investigated terms peak direction cracking propagation different notch dimensions geometries.