TETRA MESH FOR REAR VIEW MIRROR 

TETRA MESH FOR REAR VIEW MIRROR

AIM: Tetra meshing for the rear view mirror by using ANSA

PROCEDURE:

STEP 1 : Geometry cleanup.

STEP 2 : Defeaturing.

STEP 3 : Ortho Tria Meshing.

STEP 4 : Volume Defining.

STEP 5 : Check for TETCOLLAPSE.

GIVEN QUALITY CRITERIA :

S.NO	QUALITY CRITERIA	VALUE
1	Target/Acerage Length	1
2	Minimum Length	0.5
3	Maximum Length	2
4	Tetcollapse	0.2

STEP 1:

Geometry cleanup

In this step we need to do geometry cleanup for the given model

Geometrical error's are cleared by using con's release,new face's,applying topo etc

In the above figure it is showing some triple con's error's that we need to fix it by using release cons's and AUTO FIX.

Geometrical Erro's are Fixed

STEP 2:

Defeaturing

Before going to defeaturing give mesh length

MESH MODE>PERIMETER>LENGTH

After assinging the mesh length remove the line's which is less than minimum length .

MIRROR STAND

MIRROR FRAME

STEP 3:

MESHING

Before going to mesh assign mesh parameter and quality criteria as shown in figure

MESH PARAMETER

QUALITY CRITERIA

PRESENTATION PARAMETER'S

After assinging quality criteria and mesh parameter now move to mesh

In mesh there are many type's like mixed,quad,tria,ortho tria etc

Here we are using ortho tria and tria

Ortho tria in Fillet region for better mesh flow

tria in Flat region

MIRROR FRAME

MIRROR

FRAME ROTATING BALL

MIRROR STAND

STEP 4:

Volume defining

Once mesh is done we need to define the volume under volume mesh>Define>Auto

ANSA will automatically define the volume of all 4 Part's

After define we need to do remesh the volume part's by using Tetra Rapid or tetra FEM, here we are using Tetra Rapid

Tetra meshing ia an unstructured mesh Tetra rapid and Tetra FEM are commonly used mesh in volume mesh

Tetra Rapid: In this type of mesh , this mesh algorithm mesh's volume with tetra element's

Tetra FEM: In this algorithm mesh create a tetra hydral mesh inside the selected volume

This is widely used in structural application's.

MIRROR STAND

FRAME ROTATING BALL

MIRROR FRAME

MIRROR

STEP 5:

Check for TETCOLLAPSE

After defining the volume under volume mesh we need to check for Tetcollapse error's

If any tetcollapse error's will be their mean's we need to fix those error's by using MV free, Fix quality

RESULT:

All part's of REAR VIEW MIRROR is succesfully meshed as per the given quality criteria.

LEARNING OUTCOME'S:

1. Learned how to fix the geometrical error's.
2. Learned how to create ortho mesh.
3. Learned how to slove off element's in 3D mesh.
4. Learned how to define a volume.
5. Learned how to assign solid property.
6. Learned how to generated a volume mesh in the given model by using tetra rapid.
7. Learned how to fix tetcollapse error's for vo;ume mesh.

CONCLUSION:

Tetra mesh is created for the REAR VIEW MIRROR as per the given quality criteria by using ANSA.