Meshing the given component in accordance with the quality criteria given

OBJECTIVE:

To mesh the given components using the quality criteria given below and to assign the thickness.

Target Element length: 5mm

PROCEDURE:

The major steps involved is listed below:

• Importing the given CAD model
• Extracting the midsurface for each component and assigning property
• Meshing the given component with the given element size
• Assigning the quality criteria as given above
• Checking the quality criteria with the meshed model and reducing the failed elements

1. Go to Import Solver Deck>>Import Geometry>>File type:STEP>>Import. The geometry is imported

2. Go to Delete>>Solids>>Select All>>Delete. 

3. Go to Model View>>Components>>Hide all the surfaces and wireframe except for the part hinge_reinforcement_extract_body1

4. Go to Geom>>midsurface>>surfs>>displayed>>extract.

5. Once the midsurface is extracted check for any defects over the surface by changing the Geometry color view to By Topo. Clean the geometry (autocleanup can also be used)

6. Rename the Midsurface as \"HREB_1_Midsurf\" in the components view tab. Select the midsurface in components and give \"Make Current\". Hide the surface and wireframe of hinge_reinforcement_extract_body1

7. Go to Model View>>Material>>Steel

8. Go to Property>>Material: Steel>>Thickness: 0.6 mm (The thickness is obtained from the parent geometry). Go to HREB_1_Midsurf and assign the property.

9. After the cleanup, go to 2D>>automesh>>surfs>>displayed>>Element size: 5mm>>mesh type: mixed>>mesh.

10. Go to Tools>>check elements>>enter the given quality criteria. This is shown in the figure below. After entering the quality criteria check for the criterias individually.

11. If criteria is not satisfied go to 2D>>qualitycheck>>cleanuptools>>select worse. Using the cleanup tools and remeshing, clean the geomtry such that all the criterias are fulfilled. Similarly, change the display thresholds to fail and clean the goemetry until the criterias are fulfilled. This is shown in the figure below

12. Check for the mesh flow and quality criterias after the step 9. If mesh flow is not proper in some regions, remesh them. Similary, cleanup tools should be used to converge at the given quality criteria if they are not proper after step 9. The final meshed model is shown in figure below.

13. Go to Model View>>Components>>Hide all the surfaces and wireframe except for the part hinge_reinforcement_extract_body_2

14. Go to Geom>>midsurface>>surfs>>displayed>>extract.

15. Once the midsurface is extracted check for any defects over the surface by changing the Geometry color view to By Topo. Clean the geometry (autocleanup can also be used)

16. Rename the Midsurface as \"HREB_2_Midsurf\" in the components view tab. Select the midsurface in components and give \"Make Current\". Hide the surface and wireframe of hinge_reinforcement_extract_body2

17. Go to HREB_2_Midsurf and assign the property. (Here the thickness is 0.6 mm)

18. After the cleanup, go to 2D>>automesh>>surfs>>displayed>>Element size: 5mm>>mesh type: mixed>>mesh.

19. After meshing check for the criterias individually.

20.Repeat step 9 and step 10. The figures are shown below

21. Go to Model View>>Components>>Hide all the surfaces and wireframe except for the part inner_extract_body1.

22. Go to Geom>>midsurface>>surfs>>displayed>>extract.

23. Once the midsurface is extracted check for any defects over the surface by changing the Geometry color view to By Topo. Clean the geometry (autocleanup can also be used)

24. Rename the Midsurface as \"IEB_1_Midsurf\" in the components view tab. Select the midsurface in components and give \"Make Current\". Hide the surface and wireframe of inner_extract_body1.

25. Go to IEB_1_Midsurf and assign the property. (Here the thickness is 0.375 mm as calculated from the geometry. Therefore create a separate property and assign the thickness)

26. After the cleanup, go to 2D>>automesh>>surfs>>displayed>>Element size: 5mm>>mesh type: mixed>>mesh.

27. After meshing check for the criterias individually.

28.Repeat step 9 and step 10. The figures are shown below

29. Go to Model View>>Components>>Hide all the surfaces and wireframe except for the part outer_extract_body1.

30. Go to Geom>>midsurface>>surfs>>displayed>>extract.

31. Once the midsurface is extracted check for any defects over the surface by changing the Geometry color view to By Topo. Clean the geometry (autocleanup can also be used)

32. Rename the Midsurface as \"OEB_1_Midsurf\" in the components view tab. Select the midsurface in components and give \"Make Current\". Hide the surface and wireframe of outer_extract_body1.

33. Go to OEB_1_Midsurf and assign the property. (Here the thickness is 0.375 mm as calculated from the geometry. Therefore create a separate property and assign the thickness)

34. After the cleanup, go to 2D>>automesh>>surfs>>displayed>>Element size: 5mm>>mesh type: mixed>>mesh.

35. After meshing check for the criterias individually.

36.Repeat step 9 and step 10. The figures are shown below

37. Go to Model View>>Components>>Hide all the surfaces and wireframe except for the part Latch_reinforcement_extract_body1.

38. Go to Geom>>midsurface>>surfs>>displayed>>extract.

39. Once the midsurface is extracted check for any defects over the surface by changing the Geometry color view to By Topo. Clean the geometry (autocleanup can also be used)

40. Rename the Midsurface as \"LREB_1_Midsurf\" in the components view tab. Select the midsurface in components and give \"Make Current\". Hide the surface and wireframe of Latch_reinforcement_extract_body1.

41. Go to LREB_1_Midsurf and assign the property. (Here the thickness is 0.6mm)

42. After the cleanup, go to 2D>>automesh>>surfs>>displayed>>Element size: 5mm>>mesh type: mixed>>mesh.

43. After meshing check for the criterias individually.

44.Repeat step 9 and step 10. The figures are shown below

45. The final assembly is shown in the figures below.

RESULT AND CONCLUSION:

The midsurface is extracted individually for each component from the assembly and meshing is done in accordance with the element size and quality criterias given. Suitable thickness and property is assigned to the geometry.