Surface meshing on a Pressure valve

Given Data

To clean up the geometry and mesh with the below criteria

• Target length = 1mm, 3 mm and 5 mm 
• Element type = Tria

To Build

So slit the geometry into 3 cases to show the differentiation of mesh output

Case1

Target length-5 mm 

Quality criteria

min length- 3mm

max length - 7 mm

 

mesh length- 5 mm for both macros & length

 

Case2

Target length-3 mm 

Quality criteria

min length- 1mm

max length - 5 mm

Mesh length- 3 mm for both macros & length

 

Case3

Target length-1 mm 

Quality criteria

min length- 0.5mm

max length - 3 mm

 

Mesh length- 1 mm for both macros & length

Command Used

 View

Topo- to view topology view and different boundary share in geometry i.e- single, double & triple corn, free edges

mesh- to view mesh

geometry check-

Face-new

 Existing Surf

Base on the surface selected nearby surface created on edge selected

Fitted

selected open edge creates a surface with a profile specify

coons

profile on loop edge surface created 

cons-fill holes to close-loop holes 

Clean up-

check up cleanup

inital check up of geometry before clean up

tools- check - geomentry

Mesh-

To mesh the specificed geometry 

 Mesh quality

specify minimum & maximum element size 

parameters- length

length 

select the surface to specify target size assign to it

macros

specify minimum & maximum element size 

Specify the target mesh size 

 Spot mesh

Select the view to mesh the specific region that is applied to cases

Procedure

1.  Clean up are done using surface creation tool
2. after clean up unwanted lines are removed using 
3. check up the clean up status using geometric check comm
4. name selection are created in property table and assign the name in different PID 
5. Assign mesh properties as per cases
6. mesh using PID using spot mesh 
7. cross check the size using the measure tool
8. rectify all singe and triple cons

 

Output

Base model

 

Cleanup

 Name selection on PID

specify a name to the body

outer body

 

check up of minimal size

Meshing

specify element size as targeted with min & max values select the body to mesh for different cases

Output

case1

outer

inner

 

case2

outer

inner

 

case3

outer

inner

Inferences 

CASE	ELEMENT SIZE	NO. OF ELEMENTS
1	5	9016
2	3	23866
3	1	209916

case3 gives good mesh compared to the remaining cases due to 1mm element size which is able to capture the spring area but the element count increases higher with all which is tended to have a high solving time with accurate results