Challenge

Week 2 Challenge : Surface meshing on a Pressure valve

OBJECTIVE

Check the given model for the geometrical errors and perform topology cleanup and mesh the model

Target length: 1mm, 3mm, 5mm

Element type: tria

PROCEDURE

Topology Cleanup:

Go to geometry check option.
Select unchecked faces,collapsed cons,triple cons,needle faces,overlap faces, single cons, cracks. Execute check.
Solve all the errors using filling and creating faces.
Close the bottom of model.
If the surface havng length less than the mesh length, meshing on that surface won't be good. To avoid this cut the cross H of small surface using Face- Cut option.

Creating PID:

Click on properies.
Right click on the box and click on new- pshell-give name-ok
create PID's for body, inlet,outlet,spring,valve body,valve head,base surface and apply these to the surfaces and give different colors.

Meshing of different PID'S:

1.Target length:1 mm

Set the perimeter and macros length as 1mm
Set the minimum and maximum target length as .5 amm and 2 mm in the mesh quality option.
Set the same min and max values and taget length in the mesh parameter option.
Do spot mesh to the surface

2. Target length:3 mm

Only change min and max values to 2mm and 5mm.

3. Target Length: 5mm

Only change min and max values to 3 mm and 7 mm.

LEARNING OUTCOMES

RESULT

Geometry checks and topology cleanup have done on the model and mesh the given model with 1mm, 3mm and 5mm target length.

CONCLUSIONS

Meshing of model with taget length 1 amm gives smooth surface, Decrease in mesh length with results in smooth surface.
Increase in target length will result in decrease in mesh elements and also resduce the mesh quality.

In case of 5mm target length meshing of valve head and spring surface are not smooth and shown above.
In case of 3mm target length meshing quality is moderate

Ship work like this
in your own course.