Week - 4 - 2D meshing for Plastic components
AIM:
For the given Plastic Bottle Cap model, check for the geometrical errors and take the mid surface by suitable mid surfacing techniques. PID and Thickness assignment has to be done for all the mid surfaces. Mesh the same with given element Quality criteria. (Refer the table Below for the Quality criteria)
|
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 |
Description and Procedure
1. OPEN THE BOTTLE CAP MODEL IN ANSA.
2. CHECK THE GEOMETRY BY CHECK MANGER.
3. AFTER CHECKING THE GEOMETRY THEN START THE MID SURFACE.
4. ITS A COMPLEX MODEL SO WE HAVE TO TAKE MANUAL MID SURFACING FOR COMPONENT.
5. CHECK THE THICKNESS OF COMPONENT AT DIFFERENT POINTS WITH THE HELP OF MEASURE COMMAND.
6. AFTER CHECKING THICKNESS THEN START THE MID SURFACE FOR THE COMPONENT.
7. OPEN THE OFFSET COMMAND FROM TOPO BLOCK AND SELECT THE SURFACE WHICH YOU WANT TO TAKE OFFSET.
8. AFTER TAKING OFFSET AT DIFFERENT -DIFFERENT LOCATION.
9. WE CAN USE MIDDLE COMMAND FROM FACES COMMAND OPTION.
10. AFTER TAKING MID SURFACE THEN MOVE TO TEETH AND CREATE THE MID SURFACE FOR THE TEETH. FIRST CREATE THE MID CURVE BY USING MIDDLE OPTION IN THE CURVE COMMANDS.
11. AFTER CREATING MIDDLE CURVE THEN PROJECT THE CONE OF THAT TEETH ON THE MIDDLE SURFACE WE HAVE CREATED.
12. AFTER PROJECTING CURVE ON MID SURFACE THEN CREATE THE SURFACE FOR THE TEETH.
13. AFTER CREATING TEETH MID SURFACE THEN USE THE TRANFROM OPTION AND CREATE THE REQURIED NUMBER OF COPIES.
14. FOR CREATING COPIES YOU HAVE TO CREATE THE MID POINT BY USING COG COMMAND IN THE POINTS COMMAND SECTION. THEN CREATE THE TEETH ACCORDING TO THE REQUIRMENT.
15. AFTER CREATING MID SURFACE FOR TEETH THEN MOVE ONTO THREAD SECTION.
16. FOR CREATING MID SURFACE FOR THE THREAD FIRST CREATE THE MIDDLE CURVE FOR THE THREAD BY USING MIDDLE OPTION IN CURVE.
17 AFTER CREATING MIDDLE CURVE FOR THE THREAD THEN USE PROJECT COMMAND FROM CONES SECTION.
18. AFTER CREATING MID SURFACE FOR THE THREADS THEN CREATE MID SURFACE FOR REMAINING SECTION.
19. AFTER CREATING MID SURFACE THEN GO TO MESH MODULE AND CREATE THE MESH ACCORDING TO THE AIM.
20. TO SET THE QUALITY CRITERIA GO TO QUALITY PARAMETER AND SET THE VALUES.
|
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 |
21. THEN SPECIFY THE AVG SIZE OF ELEMENT.
22. GO TO PARAMETER TOOLS AND SET THE LENGTH FOR MACROS.
23. AFTER SETTING UP ALL THE DETAILS THEN GO TO BEST MESH AND CREATE THE MESH FOR THE COMPONENT.
24. CHECK THE MESH QUAILTY PARAMETERS AND DO THE NECCSARY ACCORDING TO THE QUALITY PARAMETERS.
RESULT:
