Week 2 Challenge : Surface meshing on a Pressure valve

SURFACE MESHING ON A PRESSURE VALVE

AIM;

To mesh surface of a pressure valve with three different mesh length.

PROCEDURE;

File>open file(open the ansa file)>(before topological cleanup check for geometry error)checks>geometry>Execute

(cracks,unfinished surface ,single con,etc are shown)

STEP1;

For topological cleanup;

Topo mode > face > new >select the surface type > middle click > select the suitable alternative > OK.

or

Fill hole > select the face > middle click.

choose these methods which gets suitable surface.

In some surface it's difficult to select faces so change the veiw into wire mode > Double click.

Delete the unwanted cuts which are very closer to other for getting a proper mesh.

Faces > cut > select the line (right click).

After cleaning we need check for errors.

checks > geometry >(select the parameters for valuing) > execute.(if no errors continue next step).

STEP 2;

To assign PID for different parts of the valve .

Properties > right click >new >p shell >name (eg; outlet) >color(eg;blue) > ok.

continue the same steps for assign all required PID.

STEP 3;

Start assigning the PID.

open properties >right click >Apply >middle click(eg;isolate the outlet region region using (or)option).

After assigning the PID delete the unwanted properties.

right click > delete.

STEP 4;

start meshing;

select mesh >perimeter >length >select perimeter & macros(target length 5mm).

Here we are doing 3 different mesh lenth 5mm,3mm& 1mm.

mesh parameters >target length(5mm) >minimum target length(3mm) >ok.

Quality criteria >select max; length(7mm) >min; length(3mm) >ok.

mesh generation >spot mesh >box select (or)select PID region >middle click.

Continue the same steps from mesh parameters with target length 3mm & 1mm and analyse three of them.

LEARNING OUTCOMES;

After finishing the meshing of these specific surface,we will able to know;

• Topological cleanup of unfinished surface.
• Finding the errors through the geometry check.
• Assigning PID and different color for specific parts.
• To give mesh paramaters and quality criteria for different meshes.
• If component dia is small and mesh target is high surface will be irregular.

RESULT;

we got the surface mesh of the pressure valve with three different mesh length.

we have taken 1mm,3mm,5mm as target length.

CONCLUSION;

When we take 5 mm as target length,min length-3mm &max length-7mm

we got the result with surface irregularity.

Because of smaller diameter,and the mesh length is 5mm

In the case of 3mm target length,min length-2 & max length-4mm.

It have more refined surface but also meshing in some areas are still irregular.

In the case of 1mm target length,min length-0.5mm & max length-2mm.

It have very refined surface mesh because of the smaller target length

In conclusion we can say smaller the mesh length finer the surface mesh will be.