Coincident Node Check

The ability to check for coincident nodes in the model is available in Trelis. It uses an efficient octal hash tree to make the comparisons.

To check for coincident nodes

  1. On the Command Panel, click on Mesh.
  2. Click on Volume, Surface, Curve, Vertex or Group.
  3. Click on the Quality action button.
  4. Select Coincidence Check from the drop-down menu.
  5. Select Coincident Nodes from the Type of Coincidence Check menu.
  6. Enter the appropriate settings.
  7. Click Apply.

Quality Check Coincident Node [ In ] [Group|Body|Volume|Surface|Curve|Vertex <id_range> ] [ Merge [Delete] ] [ HIGHLIGHT|Draw [color <number>]] [List] [Into Group [names|id] ]

If no entity list is given, the command works on all the nodes in the model. If an entity list is given, then it compares the nodes on those entities with the rest of the nodes in the model. By default the command highlights the coincident nodes in the graphics window and lists the total number of coincident nodes found. You can also have it clear the graphics and draw the nodes, and/or list the coincident node ids. Optionally, the coincident nodes found can be placed in a group.

If the model being operated on is from an imported universal file (i.e., no geometry exists in the model), you can merge the coincident nodes with the merge option. In this case delete allows you to delete the extra nodes (recommended). If you do not delete them they are placed into an output group.

You can control the tolerance used to check between nodes with the following setting (default = 1e-8):

set Node Coincident Tolerance [<value>]