Changing tetrahedral (3D) mesh density in an area

The Remesh Tetras tool allows you to selectively change the density of the tetrahedral (3D) elements in a portion of the model.

1. Click (Mesh tab > Mesh Repair panel > Remesh Tetras).
2. Specify the desired Selections option to select tetrahedral elements to be remeshed. Options include:

   Remesh all tetras in active layer

   Enables all tetrahedral elements in the currently active layer to be remeshed without the need to explicitly select regions of the model. Use this option when optimizing sections of the mesh that would be time consuming to reselect, for example to iteratively test various mesh settings. If necessary, use the model entity selection tools to select individual mesh elements or regions of the mesh and assign the selected elements to a new layer.

   Note: When the computer you are using has Far Eastern character sets installed, use this option as the default selection method. This is necessary due to an issue with speed of operation. This issue only occurs when Far Eastern character sets are installed.

   Select a region

   Enables the selection of a specific region in the current layer, which may include a single tetrahedral element to multiple elements. Use the model entity selection tools to select individual mesh elements or regions of the mesh.

3. Set the Target number of elements through thickness of the area to be remeshed. Specify a higher value than the default of 6 to increase the level of result precision through the thickness of the area.
4. Specify the desired Surface options to control how the surface will be remeshed. Options include:

   Do not remesh surface

   Select this option to prevent the surface mesh from being refined. Use this option when you want to refine the Target number of elements through thickness and leave the granularity of the surface mesh unchanged.

   Remesh surface by edge length

   Select this option to specify to what extent the surface mesh will be refined. Use this option to refine the granularity of result in across the surface of the model. Leave the Target number of elements through thickness set to the default value of 6 if you do not want to refine the mesh through the thickness.

   Tip: Use the Measure tool to establish the edge length of existing elements.

5. Specify Selection Options to enable model properties to be assigned to the remeshed area of the model.
6. Click Apply.