5.3.4 SURFACE MESH
This function allows the user to create auto-mesh on the selected surface(s). The user must complete the definition in Figure 5.3.4
.Figure 5.3.4 Surface Mesh
Select the SELECT SURFACES button. See Section 4.3.3,
PART/ADD SURFACE, for more information.
Select a type of tool: CONNECTED or DISCONNECTED MESH, PART MESH, or TRIANGULAR MESH.
CONNECTED TOOL MESH will connect the adjacent surfaces if the gaps are within the GAP TOL.
DISCONNECTED TOOL MESH will leave gaps between elements that are located on adjacent surfaces.
PART MESH is the new topology mesher.
TRIANGULAR MESH will only generate triangle elements.
Select or deselect IN ORIGINAL PART. This option includes the created elements in original part or in current part.
Select or deselect BOUNDARY CHECK. This option checks and displays the model boundary after building the topological structures.
Enter the numbers of MAXIMUM SIZE, MINIMUM SIZE, ANGLE and CHORDAL
DEVIATION in the data field.
MAXIMUM SIZE
Controls the maximum size
MINIMUM SIZE
Controls the minimum size
ANGLE
Controls the inclination of the adjacent elements
CHORDAL
Controls the number of elements at the radius
INGNORE HOLE SIZE
Fills the interior hole of the surface with mesh if the hole size is less
than the given value
Select APPLY TO MESH
If TOOL MESH is selected:
eta/DYNAFORM will create the mesh suitable for punch or die definition on the selected surfaces. If the number of selected surfaces is equal to or greater than 2, the BOUNDARY CHECK is activated. The function first builds topological structures and then displays the STATUS WINDOW. See Figure 5.3.5. A message will be given in the PROMPT window.
After building the topological structures, the DYNAFORM Question window appears. See Figure 5.3.6. Select YES to accept the boundary and continue to the next step. Select NO to display the BOUNDARY CHECK window. See Figure 5.3.7.
Figure 5.3.6 DYNAFORM Question Figure 5.3.7 Boundary Check
Select/deselect SHOW BOUNDARY ONLY to display surfaces with model boundary. Select OK to accept the Gap Tolerance. Select REDO to enter the new GAP TOL to rebuild the topological structures.
After the user selects or accepts the gap tolerance, eta/DYNAFORM begins to mesh surface boundary. See Figure 5.3.8. For mesh creation, see Figure 5.3.9.
Figure 5.3.8 Meshing Surface Boundaries
Figure 5.3.9 Creating Mesh
The ACCEPT MESH CONFIRMATION (YES and NO) window will be activated in the SURFACE MESH window. Select YES or NO to accept or reject the created mesh.
Select OK to exit.
Note: When any status window appears, the user can abort the current operation by selecting ABORT.
If PART MESH is selected:
PART MESH is the new topology mesher. Refer to Figure 5.3.10 for the list of control parameters.
CHECK SURFACE
Check for duplicate surfaces while meshing.
MESH BY PART
Mesh parts one at a time. The mesh will not be connected between parts.
AUTO REPAIR
Automatically merge gaps between elements and delete free nodes.
INGNORE HOLE SIZE
Fill an interior hole in the surface with mesh if the hole size is less
than the given value.
MESH QUALITY
Refer to the parameters to control mesh quality in Figure 5.3.11.
Figure 5.3.10 Part Mesh Figure 5.3.11 Mesh Quality
If TRIANGULAR MESH is selected:
The user can enter only the element size and the gap tolerance as shown in Figure 5.3.12.
Figure 5.3.12 Triangular Mesh