A numerical model for rock is proposed in which the rock is represented by a dense packing of non-uniform-sized circular or spherical particles that are bonded together at their contact points and
An Accurate SPH Scheme for Dynamic Fragmentation We focus on the use of a meshless numerical method called Smooth Particle Hydrodynamics (SPH), to solve fragmentation issues as Hyper Velocity Impact (HVI) cases. Firstly applied to fluid flow
In addition, the acoustic approximation fails to reproduce the jacket fragmentation pattern since the fragmentation length of the jacket is significantly under-predicted. A numerical simulation is also presented using the ANSYS Autodyn 14.0 software.
Numerical Modelling of Fracture Propagation and Numerical Modelling of Fracture Propagation and Fragmentation in Brittle Rocks Dr Adriana Paluszny, Morteza Nejati, Philipp S. Lang Prof Robert W. Zimmerman, Rock Mechanics Chair Dept Earth Science and Engineering Imperial College London November 12, 2015 -
Numerical investigation on rock fragmentation by cutting The brittle cracking model was adopted to describe rock macroscopic mechanical characteristics in the numerical model of rock fragmentation by a cutting head, which could simulate the failure and fracture behavior of brittle materials in tension, shear, or combined tension and shear, such as concrete decomposition or rock fragmentation.
In this context, the goal of the PhD thesis will be to develop a multi-scale numerical modeling approach to investigate the mechanisms of fragmentation from the scale of plant tissue dissociation up to the process scale. The proposed bottom-up models will proceed from the
Numerical modeling of rock fracture and fragmentation The fracture and fragmentation of rock materials are basic and important problem in geomechanics and blasting engineering. An approach, which can simulate the process of fracture and fragmentation
Numerical modelling and experimental validation of Numerical modelling and experimental validation of dynamic fracture events along weak planes Irene Arias b,*, Jaroslaw Knap c, Vijaya B. Chalivendra d, Soonsung Hong a, Michael Ortiz a, Ares J. Rosakis a a Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA 91125, USA b Dep. de Matema `tica Aplicada III, Universitat Politecnica de Catalunya, Barcelona 08034, Spain
An innovative approach based on the combined finite-discrete element method (FEM/DEM) has been applied to rock fall simulation. Such a numerical tool explicitly takes into account rock deformability, fracturing and fragmentation and allows to simulate multiple interacting bodies. Results from rock fall full-scale tests were used to calibrate the numerical model and demonstrate how experimental SI:Experimental Testing and Computational Modeling of Numerical modelling to reproduce fragmentation of a tungsten heavy alloy projectile impacting a ceramic tile:Adaptive solid mesh to the SPH technique and the cohesive law L.M. Bresciani, A. Manes, T.A. Romano, P. Iavarone, M. Giglio Pages 3-13