Week - 4 - 2D meshing for Plastic components
Aim :
To improve geometrical errors and take midsurface for bottle cap
To assign PID and Thickness to the midsurface
A proper midsurface needs to be extracted
Meshing the geometry with proper flow
check for quality and improve the errors
Obtain the quality criteria with a proper mesh flow
Componenet : Bottle cap
|
S.No |
Quality Criteria |
Value |
|
1 |
Target/Average length |
1 |
|
2 |
Minimum Length |
0.5 |
|
3 |
Maximum Length |
3 |
|
4 |
Aspect |
3 |
|
5 |
Warpage |
15 |
|
6 |
Skewness |
45 |
|
7 |
Jacobian |
0.7 |
|
8 |
Minimum Quad Angle |
45 |
|
9 |
Maximum Quad Angle |
135 |
|
10 |
Minimum Tria Angle |
30 |
|
11 |
Maximum Tria Angle |
120 |
|
10 |
Tria Percentage |
15 |
Procedure :
Step1 :
A geometry check needs to be done and try fixing the errors
Select cross hatches and start taking the midsurface
Midsurface for the base is taken first by checking the thickness and using offset
Then the top portion midsurface is taken the cylindrical part
Step 2 :
After the base part is taken the threads midsurface are taken
Using middle option the midusrface is done
Then using the project command the using the face its projected
New command is used selected coons for creating the thread surface
Step 3:
Fins midsurface is taken by using the middle option on faces
They are extended to the surface similarly done for ribs
This procedure is repeated for the bottle cap to take midsurface
Intersect option is used to join the surfaces or extend option is used depending on the parts
Step 4:
Meshing is done after the entire midsurface is given with proper mesh flow
Best mesh option is used and meshing is done at every region
Once the entire meshing is done quality is checked unmeshed area is meshed
Reconstruct option is used in the quality issues area and tria nodes are avoided
Pid option is used to assign the thickness to the bottle cap
Every surface having different thickness separate pid is used
In case of varying thickness avg value is taken pid is assigned
Learning Outcomes :
Cleaned the Geometry
Midsurface is taken for plastic bottle cap
Quality parameters are obtained
pid is assigned separately for thickness
Conclusion :
The geometry is cleaned Meshing is done for plastic bottle cap quality criteria is given separate pid is assigned to the parts and the reference is attached