clean the geometry, extract midsurface, clean midsurface geometry and create 2D mesh with given criteria quality

Link for the model- https://1drv.ms/u/s!AlDYq9nTGAGChA58Gi3QpB45lAr5?e=6DeYaa

link for the repairclip- https://1drv.ms/u/s!AlDYq9nTGAGChA8Pc6-W_sWA5J-K?e=d5BR1x

link for the mounting bracket- https://1drv.ms/u/s!AlDYq9nTGAGChBCFNlF4JYVdwqNQ?e=Z7OQjL

OBJECTIVES: To clean the geometry, extract midsurface, clean midsurface geometry and create 2D mesh with given criteria quality

Procedure:

Step 1: Open the model file, under radios profile

Step 2: View the model in topology display toolbar to evaluate its integrity.

1. Observe where the model has incorrect connectivity and missing or duplicate surfaces.
2. Click Geometry > Quick Edit to open the Quick Geometry Edit panel. Note that the surface edges are now colored according to their topology status.
4. Click Wireframe Geometry to display the model in Wireframe mode.
5. Observe the free edges and make note of where they are. The free (red) edges show where there is incorrect connectivity or gaps.
6. Note the locations where there are closed loops of free edges. These are locations that probably have missing surfaces.
7. Delete the surface that overhangs the round corner.
8. Enter the Delete panel in one of the following ways: From the menu bar click Geometry > Quick Edit > delete surf
9. Create surfaces to fill large gaps in the model. Click Geometry > Create > Surfaces > Spline/Filler to create the surface.
10. Toggle edge is used to stitch the free edges by increasing value. Quick edits>filler surface is used to fill the deleted surface

Step3: Generate a midsurface from Midsurfaces panel

1. From the menu bar, click Geometry > Create > Midsurfaces > Auto.
2. Verify that the closed solid option is selected, and the entity selector is active and set to surfs.
3. Select one surface
4. To start the midsurface generation, click extract. HyperMesh creates the midsurface, and organizes the surfaces into a new Middle Surface component.
6. When HyperMesh creates the midsurface, transparency is turned on for all of the other components in the model except the new Middle Surface component
7. Using the Mesh > Quick edit (F11) panel improve the quality of the mesh using the following functions:

• toggle edge
• adjust/set density
• add/remove point
• split surf-node; split surf-line;

Step 4: Simplifying CAD Tools

Removing Edge Fillets

• Enter the Geometry > Defeature > Edge Fillets
• Pick the displayed surfaces.
• Enter 1 for the min radius.
• Enter 20 for the max radius.
• This will guarantee all edge fillets are selected.
• Click find.
• Click remove
• All of the edge fillets will be removed leaving sharp corners in their place

Removing Surface Fillets

• Select the surf fillets sub-panel.
• Select the displayed surfaces.
• Set the min radius to 0.1.
• Set the max radius to 5.
• Click find.
• Click remove
• The fillets will be removed once again providing for a better mesh quality

Removing Holes

• Select the pinholes sub panel.
• Select the displayed surfaces.
• Set the diameter< field to 5.
• Click find
• The small holes will be selected .click delete, the holes are removed and a fixed point is placed at their former center.

Step5: Meshing

1. Set the mesh parameters and quality criteria ,min length=3.5mm,max length=7mm
2. Automesh the component with target element size 5mm.
3. Select the surfaces in the Standard collector.
4. Click on mesh to create 2D shell elements.

• Adjust the edge densities.
• Recalculate the entire model to have a 5mm element size.
• Change the mesh style

5. Click on return to save the mesh.

Step 6: Review the mesh quality.

1. From the menu bar, select Mesh > Check > Elements > Check Elements to open the Check Elements panel.
2. Go to the 2-d sub-panel.
3. Click the length< button to evaluate the minimum length.
5. Note the elements that failed the check. The topology will be edited to correct some of these, leave the rest as is.
6. Access the Quality Index panel by clicking shortcut key F10
8. Click return to exit the panel.

Step 7 : Solve the shell element connectivity issues using edge panel

1. In the tolerance= field, type 0.01.
2. Select an element in the graphics area to select the component.
3. Click preview equiv.
4. Click equivalence.
5. Rotate and observe the model to see that the mesh still looks as it should and no elements are collapsed.
6. Click delete edges.
7. Review the model’s free edges again to confirm that all of the shell element connectivity problems have been corrected.

Step8: Display the element normals

1. From the Checks toolbar, select the Normals icon
2. Press the SHIFT+F10 keys
3. Choose the elements subpanel and set toggle to vector display.
4. Click display.
5. The element normals are displayed using colors. The red side of the elements is the negative normal direction, while the blue side is the positive normal direction
6. Notice each side of the part shows red and blue.

Step9: Assign thickness

1. Assigned the Material and thickness
2. Check using display 2D mesh option to check for the thickness in mesh
3. Select the 2d traditional and detailed element representations to preview the thickness assigned to the component.

part-2 clip Repair

Procedure:

Step 1: Open the model file, under radios profile

Step 2: View the model in topology display toolbar to evaluate its integrity.

1. Observe where the model has incorrect connectivity and missing or duplicate surfaces.
2. Click Geometry > Quick Edit to open the Quick Geometry Edit panel. Note that the surface edges are now colored according to their topology status.
3. Click Wireframe Geometry to display the model in Wireframe mode.
4. Observe the free edges and make note of where they are. The free (red) edges show where there is incorrect connectivity or gaps.
5. Note the locations where there are closed loops of free edges. These are locations that probably have missing surfaces.
6. Delete the surface that overhangs the round corner.
7. Enter the Delete panel in one of the following ways: From the menu bar click Geometry > Quick Edit > delete surf
8. Create surfaces to fill large gaps in the model. Click Geometry > Create > Surfaces > Spline/Filler to create the surface.
9. Toggle edge is used to stitch the free edges by increasing value. Quick edits>filler surface is used to fill the deleted surface

Step3: Generate a midsurface from Midsurfaces panel

1. From the menu bar, click Geometry > Create > Midsurfaces > Auto.
2. Verify that the closed solid option is selected, and the entity selector is active and set to surfs.
3. Select one surface
4. To start the midsurface generation, click extract. HyperMesh creates the midsurface, and organizes the surfaces into a new Middle Surface component.
5. When HyperMesh creates the midsurface, transparency is turned on for all of the other components in the model except the new Middle Surface component
7. Using the Mesh > Quick edit (F11) panel improve the quality of the mesh using the following functions:

• toggle edge
• adjust/set density
• add/remove point
• split surf-node; split surf-line;

Step 4: Simplifying CAD Tools

Removing Holes

• Select the pinholes sub panel.
• Select the displayed surfaces.
• Set the diameter< field to 5.
• Click find
• The small holes will be selected .click delete, the holes are removed and a fixed point is placed at their former center.

Step5: Meshing

1. Set the mesh parameters and quality criteria ,min length=3.5mm,max length=7mm
2. Automesh the component with target element size 5mm.
3. Select the surfaces in the Standard collector.
4. Click on mesh to create 2D shell elements.

• Adjust the edge densities.
• Recalculate the entire model to have a 5mm element size.
• Change the mesh style

5. Click on return to save the mesh.

Step 6: Review the mesh quality.

1. From the menu bar, select Mesh > Check > Elements > Check Elements to open the Check Elements panel.
2. Go to the 2-d sub-panel.
4. Click the length< button to evaluate the minimum length.
5. Note the elements that failed the check. The topology will be edited to correct some of these, leave the rest as is.
6. Access the Quality Index panel by clicking shortcut key F10
8. Click return to exit the panel.

Step 7 : Solve the shell element connectivity issues using edge panel

1. In the tolerance= field, type 0.01.
2. Select an element in the graphics area to select the component.
3. Click preview equiv.
4. Click equivalence.
5. Rotate and observe the model to see that the mesh still looks as it should and no elements are collapsed.
6. Click delete edges.
8. Review the model’s free edges again to confirm that all of the shell element connectivity problems have been corrected.

Step8: Display the element normals

1. From the Checks toolbar, select the Normals icon
2. Press the SHIFT+F10 keys
3. Choose the elements subpanel and set toggle to vector display.
4. Click display.
5. The element normals are displayed using colors. The red side of the elements is the negative normal direction, while the blue side is the positive normal direction
6. Notice each side of the part shows red and blue.

Step9: Assign thickness

1. Assigned the Material and thickness
2. Check using display 2D mesh option to check for the thickness in mesh
3. Select the 2d traditional and detailed element representations to preview the thickness assigned to the component.

part-3 MOUNTING BRACKET

Procedure:

Step 1: Open the model file, under radios profile

Step 2: View the model in topology display toolbar to evaluate its integrity.

1. Observe where the model has incorrect connectivity and missing or duplicate surfaces.
2. Click Geometry > Quick Edit to open the Quick Geometry Edit panel. Note that the surface edges are now colored according to their topology status.
3. Click Wireframe Geometry to display the model in Wireframe mode.
4. Observe the free edges and make note of where they are. The free (red) edges show where there is incorrect connectivity or gaps.
5. Note the locations where there are closed loops of free edges. These are locations that probably have missing surfaces.
6. Delete the surface that overhangs the round corner.
7. Enter the Delete panel in one of the following ways: From the menu bar click Geometry > Quick Edit > delete surf
8. Create surfaces to fill large gaps in the model. Click Geometry > Create > Surfaces > Spline/Filler to create the surface.
9. Toggle edge is used to stitch the free edges by increasing value. Quick edits>filler surface is used to fill the deleted surface

Step3: Generate a midsurface from Midsurfaces panel

1. From the menu bar, click Geometry > Create > Midsurfaces > Auto.
2. Verify that the closed solid option is selected, and the entity selector is active and set to surfs.
3. Select one surface
4. To start the midsurface generation, click extract. HyperMesh creates the midsurface, and organizes the surfaces into a new Middle Surface component.
5. When HyperMesh creates the midsurface, transparency is turned on for all of the other components in the model except the new Middle Surface component
7. Using the Mesh > Quick edit (F11) panel improve the quality of the mesh using the following functions:

• toggle edge
• adjust/set density
• add/remove point
• split surf-node; split surf-line;

Step 4: Simplifying CAD Tools

Removing Holes

• Select the pinholes sub panel.
• Select the displayed surfaces.
• Set the diameter< field to 5.
• Click find
• The small holes will be selected .click delete, the holes are removed and a fixed point is placed at their former center.

Step5: Meshing

1. Set the mesh parameters and quality criteria ,min length=3.5mm,max length=7mm
2. Automesh the component with target element size 5mm.
3. Select the surfaces in the Standard collector.
5. Click on mesh to create 2D shell elements.

• Adjust the edge densities.
• Recalculate the entire model to have a 5mm element size.
• Change the mesh style

5. Click on return to save the mesh.

Step 6: Review the mesh quality.

1. From the menu bar, select Mesh > Check > Elements > Check Elements to open the Check Elements panel.
2. Go to the 2-d sub-panel.
3. Click the length< button to evaluate the minimum length.
5. Note the elements that failed the check. The topology will be edited to correct some of these, leave the rest as is.
6. Access the Quality Index panel by clicking shortcut key F10
7. Click return to exit the panel.

Step 7 : Solve the shell element connectivity issues using edge panel

1. In the tolerance= field, type 0.01.
2. Select an element in the graphics area to select the component.
3. Click preview equiv.
4. Click equivalence.
5. Rotate and observe the model to see that the mesh still looks as it should and no elements are collapsed.
6. Click delete edges.
8. Review the model’s free edges again to confirm that all of the shell element connectivity problems have been corrected.

Step8: Display the element normals

1. From the Checks toolbar, select the Normals icon
2. Press the SHIFT+F10 keys
3. Choose the elements subpanel and set toggle to vector display.
4. Click display.
5. The element normals are displayed using colors. The red side of the elements is the negative normal direction, while the blue side is the positive normal direction
6. Notice each side of the part shows red and blue.

Step9: Assign thickness

1. Assigned the Material and thickness
2. Check using display 2D mesh option to check for the thickness in mesh
3. Select the 2d traditional and detailed element representations to preview the thickness assigned to the component.

Conclusions

1. The geometries are cleaned up by removing free edge
2. The midsurface is extracted and cleaned up again for proper meshflow.
3. 2d mesh is generated within quality criteria
4. Thickness is assigned for the component

Conclusions

1. The geometries are cleaned up by removing free edge
2. The midsurface is extracted and cleaned up again for proper meshflow.
3. 2d mesh is generated within quality criteria
4. Thickness is assigned for the component