Week - 4 - 2D meshing for Plastic components
OBJECTIVE:
To check for the geometrical errors and take the mid surface for the given Plastic Bottle Cap model .
GIVEN :
Element Quality criteria for 2D mesh .
CAD MODEL:

PROCEDURE:
- Download the model and import it on GUI of ANSA software.
- Give cons resolution to the given plastic component mesh deck>length>perimeter. Check for geometry errors check>geometry>visible >run.

- Give topo from topo deck to get the orientation .
- Go to measure option and check the thickness of each surface by measuring the cons to get the value of thickness respectively.
- store the above values and create PIDS differently for such entites respectively.
- EXtracting mid surface is done by offset option from the topodeck . we get ,
- Extracting of outter surface is done by go to topo deck >curves>middle> select two curves to create middle >get the curves . Project the curve on the surface . go to topo deck >faces>new>select the required surface to be created between two curves.
curves and teeth midsurface.


- Thus the midsurface is obtained for such geometry . Once we get midsurface we give topo for getting the connectivity.
The midsurface obtained.
PIDS created for different thickness surfaces.- After taking the midsurface , we go to mesh the component by giving quality and mesh parameters.

- go to mehsh deck >mesh generation>best. to get proper mesh go to mesh deck >shell >reconstruction / smooth > select the elements.
.- Give the required thickness to each PIDS respectively. To view the elements in solid state go to Quality criteria > Presentation parameters>view as solid
CONCLUSION:
The given bottle cap is meshed as per the given quality criteria along with mannual midsurface.
FINAL MODEL:
Thickness.
Mid surface.
2D mesh .
LEARNING OUTCOMES:
- mannual midsurface for plastic component
- Assigning thickness to different PID entites
- extracting midsurface using middle option from faces and cons group for ribs .
- geometry clean up after extracting midsurface and improvising mesh flow.
- using tranformation option to get the surfaces.