Week- 8 - Solid meshing

AIM

For the given Rear view mirror component, check for the geometrical errors and mesh the Surfaces with the given 2D element Quality criterias given below.

S.No	Quality Criteria	Value
1	Target/Average length	1
2	Minimum Length	0.5
3	Maximum Length	2

Use tetra elements to mesh the Volumes defined in the model and check for the below quality after Volume meshing.

S.No	Quality Criteria	Value
1	Tet collapse	0.2

Surface Quality after Volume mesh should be good. (i.e. There should not and kinks and dips on the surface of the component.)

Governing equation

OBJECTIVE

check for the geometrical errors

mesh the Surfaces with the given 2D element Quality criterias

Use tetra elements to mesh the Volumes defined in the model and check tet collapse quality after Volume meshing.

BODY OF CONTENT

• Importing the component
• 
• refine perimeter and macro to targetted length(1mm)

• Geometry Checks:

  • The geometry checks are used to check the geometry setup file using checkbox by selecting the geometry option
  • And it shows that various errors in the geometry on the surface and has to be auto fixed and manually fixed if needed.
  • perform topo opertations to stitch parts
• 

solid meshing done when

• thickness>6mm
• thickness cannot be measured
• thickness is hollow

ortho tria computitional time is high as there is more elements and good result

so for flat surace we use tria meshing

curves surface we use ortho for proper definition

• input quality criterias

mesh surface in classic mesh mode

ortho tria for curved surface

tria meshing for flat surface

input tet collapse criteria for volume meshing

meshed model sample

Define volume of various components and do tetra meshing(TERTA FEM OR RAPID)

check for tet collapse and make it nill if present

final model

conclusion

For the given Rear view mirror component

• geometrical errors checked
• surface meshed with 2d quality criteria
• tetra meshing done for defined volume with tet collapse criteria

THINGS LEARNED

• SOLID MESHING
• TETRA MESHING FOR VOLUME DEFINED
• TET COLLAPSE