Software: PFC2D
Examples
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PFC2D Grain-Structure GeneratorThe PFC2D grain-structure generator implements a disk-packing scheme within PFC2D to produce a polygonal mesh that is output as three ASCII files. These meshes have been used to construct PFC2D and UDEC grain-based models. The PFC2D grain-based models have been used to study spalling in hard rock. |
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PFC2D Grain-Based ModelsPFC2D grain-based models (GBMs) provide a synthetic material that mimics deformable, breakable polygonal grains cemented along their adjoining sides. Such models are constructed by overlaying a polygonal grain structure on a bonded-particle model and representing the interfaces via smooth-joint contacts. PFC2D GBMs have been used to study spalling in hard rock, and PFC2D GBMs with unbreakable grains have reproduced many aspects of the compression and tension response of Äspö diorite including matching both the unconfined compressive strength and the direct-tension strength of this rock. |
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Molecular dynamics with PFCMolecular dynamics (MD) simulation involves solving the classical many-body problem in contexts relevant to the study of matter at the atomistic level. The introductory section first defines MD simulation, and then situates the PFC programs within the MD framework. The second section presents the Lennard-Jones potential. Then, the PFC implementation of atomic interactions via the Lennard-Jones potential is described in Section 3. The PFC implementation supports any number of atom types with different Lennard-Jones parameters for each combination of atom-atom interaction. Extensions of the PFC implementation to support the TIP4P water molecule are presented in Section 4, and limitations of the PFC implementation are discussed in Section 5. |
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Rock CuttingA simulation of rock cutting to better understand drilling mechanics. The FISH procedures utilized in this example are described in the accompanying technical memo linked below. |
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Granular Flow from a HopperAn examination of flow from a hopper under different frictional properties. |
