A new SPH-based continuum framework with an embedded fracture process zone for modelling rock fracture
作者： Yingnan Wang , Ha H. Bui , Giang D. Nguyen , P.G. Ranjith
DOI: 10.1016/J.IJSOLSTR.2018.09.019
关键词: Constitutive equation 、 Continuum (measurement) 、 Scale effect 、 Length scale 、 Lagrangian 、 Geology 、 Fracture (geology) 、 Fracture process 、 Smoothed-particle hydrodynamics 、 Mechanics
摘要: Abstract A new computational approach combining the Smooth Particle Hydrodynamics and a constitutive model that possesses an intrinsic length scale is proposed in this study for modelling rock fracture. In particular, continuum-based size-dependent with embedded fracture process zone described by cohesive adopted strain localisation geomaterials. introduced into equations to describe effect commonly observed localised failure of The then employed mesh-free Taylor (Taylor-SPH) framework produce tool modelling. key feature numerical it describes geometry set Lagrangian particles, which carry information such as damage evolution orientation, thus bypassing need represent fracture's topology orientation. To test capability simulating behaviour, three mode-I tests including three-point bending test, Brazilian-disc semi-circular are carried out results validated experimental data literature. good agreement between suggests method promising
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