Week 2 Challenge : Surface meshing on a Pressure valve

Aim:-Surface Meshing on a Surface Valve

Topo Logy Clean Up:-

Check the Geometrical Error:- Procedure to check the Geometrical Error

Batch Section Arorrow down →Checks → Geometry Checks → Templates (ANSA Checks)→Select the geometry visible → Check the modes need to execute → Execute

 These are  the shows error single cones , Double cones , Triple Cones

 After the execute model shows the error. To resolve that.

To see the wireframe single cones hides the double cone and Triple Cone & Cross Edges.

Select the CTRL+ shift to see wire frame.

In Models Single cones are presented then we needs to closed the geometry.

Select the TOPO Mode

Face →New(Define  new face )→  Exisisting Surface

                                            →  Planer

                                            → Fitted

                                            →Cones

Choose any one as per requirement then Selected the Cones ( we can selected single entity or the loop entity)→ Centre Button Ok.→ after that we apply Topo

 TOPO Selection Procedure

Select Surface → Create the Box Selection full Model→ centre button ok → its be converted into Doble

cone and Triple cones.

.

Repeate this Procedure for all single cones.

after that check the geometry check.its should be visible status ok.

 

Create PID

PID  Procedure

Select The 

PID Mode → RightClick → New → Shell →ok

Assign the PID 

Select particuular PID → Right Click → Select the entity → ok its shows the pid color.

Meshing:-

• Target length 5mm

Minimum length = 3mm

Maximum length = 7mm

Meshing Procedure 

Select Mesh Parameter →  Genral Select →  Target Length (5mm) → Minimum Length(3mm)→ Maximum Length (7 mm) → Select Tria 

Quality Parameters:-

Select Quality Parameter → Minimum Length (3mm)→ Maximum Length (7mm)→ok

Length :- slection procedure 

 Meshing:-

  

As you can see as we look into the smaller part of geometry the shape is not that sharp and accurate the spring has lost its shape completely.

• Target length = 3mm

Minimum length = 1mm

Maximum length = 5mm

 

 

• Target length = 1mm

Minimum length = 0.5mm

Maximum length = 2.0mm

its too fine size to calulation

CONCLUSION:

• With fine mesh size the accuracy increases but the time for calculation also increases
• We can make two different target length according to the size of parts and required accuracy, in this case the outer casing mesh size can be 3mm which is not so large and not that fine earthier for good and accurate result
• For the smaller parts like the spring and the column head the mesh length can be 1mm so the accuracy for smaller parts increases too