New Features in 16.5

As with all other releases, updates and enhancements from the Cubit core have been integrated into this version of Trelis. The csimsoft team continues to make Trelis easier to use and more robust. Our technology partners, including Distene and Spatial, also continue to make their respective contributions better, faster, and more robust.

Release Notes for Trelis 16.5 can be found here.

Updated Meshing Algorithms

Triangle Meshing Improvements

  • The self-intersection prevention algorithm for triangle meshes has been enhanced, especially on curved thin areas.
  • Mesh quality has been improved when sizing is chaotic
  • Volume gradation performance has improved
  • More robust triangle meshing of discrete geometry

Tetrahedral Meshing Improvements

  • The gradation, minimum size, and maximum size are handled better making it possible to generate a coarser mesh than previous versions as the gradation increases.
  • Improved memory management decreasing crashes

Enhanced Graphics Pipeline Performance

The graphics subsystem was upgraded to VTK 8.0, using OpenGL2.
Rendering speed has increased anywhere from 4 times to 100 times, depending on the model being rendered.
Memory usage is roughly the same as in previous versions of Trelis, although memory management has improved.

Other Important Changes

  • Added ability to add a force on a node or face
  • When selecting a material on the model tree, users can now assign that material to a block or edit the material using a context menu.
  • Added ability to perform a quality check on a block.
  • When importing or exporting Gambit Neutral File, users must now use the keyword 'neutral'. Otherwise, a .dbs file will be assumed.
  • Users can now stitch surfaces that contain composites
  • The ITEM Wizard is now its own docking window.
  • The 'create surface from curves' command is more tolerant of sloppy geometry.
  • Added a new function the CubitInterface.  double evaluate_exterior_angle_at_curve( int curve_id, int volume_id)

Lite Mesh Enhancements

'Lite' mesh elements introduced in the previous version have some additional functionality, including:

  • When hitting 'n' in the graphics window the listing now includes Lite elements
  • More functions for highlighting and drawing Lite elements
  • The Model Tree icon will change for blocks, sidesets, and nodesets when Lite elements are contained

Remove Blunt Tangencies

A new command and command panel was added to remove blunt tangencies. Read more detail about the function here.
blunt tangency vertex <id> [remove_material] [angle <degrees=45>] [depth <value> ] [preview]
Command Panel:

This command works on areas where tangencies cause very small elements and small time steps.


Easy Access to More Power Tools

The ITEM Wizard contains many tools that are useful for defeaturing models or otherwise preparing a model for meshing. The most popular tools have been exposed as command panels making them easier to access and enabling their use in a custom tool bar.

  • Remove Small Features
  • Check Meshability
  • Check for Blend Surfaces
  • Manage Gaps and Overlaps
  • Manage Imprint and Merge
  • Force a Sweep
  • Suggest Source and Target Sweep Surfaces
  • Suggest Decomposition Solutions