Tetrahedral Blocks in 3DEC

Users of UDEC will be familiar with Voronoi jointing capabilities that allow you to create polygonal blocks. This allows you to simulate a background fracturing that could represent mineral grain boundaries or some dense jointing in a rock mass. There is no such capability (yet) in 3DEC. However, you can easily create a model composed of tetrahedral blocks. Here’s how.

  1. Create a block and zone it with tetrahedral zones.
  2. Use the fish function below to output the zones as polyhedra in a 3DEC data file
  3. Use new to clear the original model and then call the data file you just created to read in tetrahedral blocks.

Voila! You can then of course mesh these blocks to make them deformable. Recent updates to 3DEC have attempted to speed up calculations in which the majority of blocks are tetrahedra with a single zone.

One word of warning though: The meshing algorithm in 3DEC tends to create aligned tetrahedral at the edges, so you may want to cut away the edges to ensure a more random block pattern.

Download example.


Neuesten Nachrichten
  • ITASCA Information Day We are happy to announce that this year we can finally offer an Itasca Information...
    Weiterlesen
  • Itasca Software now Available for Linux Version 7 or greater of Itasca software (FLAC3D, 3DEC, PFC3D, and PFC2D) are now operable...
    Weiterlesen
  • Itasca Celebrates 40 Years Itasca is celebrating 40 years of solving geomechanical and hydrogeological challenges through engineering and computer...
    Weiterlesen

Kommende Veranstaltungen
13 Mär
3DEC In-Person Introductory course
Live in-person introductory training course in Minneapolis, Minnesota. This course provides an overview of the capabilities and feature... Weiterlesen
27 Mär
FLAC3D In-Person Introductory Course
Live in-person introductory training course. This 3-day course provides general feature training addressing basic concepts and recommen... Weiterlesen
30 Mär
Griddle In-Person Introductory Course
Live in-person introductory training course. This course provides an overview of the capabilities and features of Rhino3D CAD software ... Weiterlesen