BlockRanger

BlockRanger is Griddle’s interactive, easy-to-use, all-hexahedral mapped volume mesh generator. Hexahedral structured meshes provide strict control of element quality, spatial distribution, and orientation and can result in more accurate stress calculations (e.g., for tunnel linings). Using Rhinoceros 3D CAD tools,* you can interactively partition, or build, an assembly of watertight solids with matching corners, edges and faces, consisting of tetrahedrons (4-sided), prisms (5-sided), and hexahedrons (6-sided). If the solids are contiguous, BlockRanger also ensures that the resulting mesh maintains grid conformity and continuity across block corners, edges, and faces.

As BlockRanger directly operates on solids, their names can be transferred to FLAC3D or 3DEC as named zone/block groups. Other geometrical features, such as contacts between solids, and unnamed solids are named automatically.

To create the hexahedral mesh, BlockRanger requires only three parameters:

  1. Maximum element edge length
  2. Minimum block resolution
  3. Target number of elements (for best aspect ratio)

BlockRanger exports high-quality structured hexahedral (brick) volumes for use with:

  • FLAC3D
  • 3DEC
  • ABAQUS
  • ANSYS
  • NASTRAN
  • LS-DYNA
  • VRML format
  • CSV format

New in BlockRanger

  • BR engine is more robust and able to mesh solids with concave surfaces and even solids with certain internal issues (e.g., not properly connected solid nodes/edges).
  • New option to automatically create boundary surface meshes in Rhino corresponding to the meshed solid. This surface mesh can later be used to create unstructured mesh around it (e.g., structured volume mesh within a tunnel and unstructured volume mesh around it).
  • New output formats:
    • 3DEC 7.0
      • Text (ASCII) or binary output
    • FLAC3D binary output
    • CSV file

*Rhinoceros 3D is developed by Robert McNeel & Associates and sold separately*. Griddle is a plug-in application for Rhino 3D.


Latest News
  • Itasca Celebrates 40 Years Itasca is celebrating 40 years of solving geomechanical and hydrogeological challenges through engineering and computer...
    Read More
  • Stability and Stress-Deformation Analyses of Reinforced Slope Failure at Yeager Airport This paper describes the material properties along with the inverse limit-equilibrium and permanent deformation analyses...
    Read More
  • Computers and Geotechnics: Scott Sloan Best Paper Award for 2019 Itasca is pleased to congratulate Dr. Branko Damjanac and Dr. Peter A, Cundall for their...
    Read More

Upcoming Events
19 Apr
FLAC 2021 Online, Live Introductory Training
FLAC is numerical modeling software for advanced geotechnical analysis of soil, rock, groundwater, and ground support in two dimensions... Read More