 |
Fracture Simulation in Materials | DISROC |  |
Hyperbolic strength criterion with cohesion and friction angle degradation
(model 21240 of the Materials Catalog)
| This joint model is defined by: - Non linear elastic model under normal stress allowing to limit the joint closure to a maximum value e. - Hyperbolic strength criterion generalizing the Mohr-Coulomb model. It is defined by a cohesion, tensile strength and asymptotic friction angle - Non associate plastic potential with a dilation angle different from the friction angle - Cohesion and friction angle degradation from initial values to smaller residual values - A maximum shear stress followed by a cohesion degradation phase |
This joint model is able to represent the Braton-Bandis model of rock-joints.
 Non linear elastic behavior under normal stress : maximum closure limited to the initial thickness e |  Hyperbolic strength surface F0 degrading (red arrows) into a residual strength surface Fr |
 Rock joint submitted to a combined normal and shear loading |  Shear stress version tangent relative displacement for a rock joint with the Barton-Bandis model: strength degradation after a maximum shear stress |
More information: Materials Caralog , Disroc Diaporama
Conatct:
Fracsima, 4 Impasse Doron, 94410, Arcueil
Phone: (33) 622160175, Email: fracsima@fracsima.com
Contact Us
Copyright Fracsima