MESHING OF HOOD OF A CAR USING ANSA

MESHING OF HOOD OF A CAR USING ANSA

AIM:

To create a mesh for the given hood of a car according to the given quality criteria using ANSA

PROCEDURE:

STEP 1:

Geometry Cleanup.

STEP 2:

Midsurface Extraction.

STEP 3:

Assingining new PID.

STEP:

Meshing.

GIVEN QUALITY CRITERIA :

SL NO:	Quality Criteria	Value
1.	Target/Average length	5
2.	Minimum length	3
3.	Maximum length	7
4.	Aspect	3
5.	Warpage	15
6.	Skewness	45
7.	Jacobian	0.7
8.	Minimum Quad Angle	45
9.	Maximum Quad Angle	135
10.	Minimum Tria Angle	30
11.	Maximum Trai Angle	120
12.	Tria Percentage	15

The car hood has 4 parts

1. Hinge reinforcement.

2. Latch reinforcement.

3. Lower hood.

4. Upper hood.

STEP 1 :

Geometry Cleanup

In this we need to geometry cleanup for given model. the error's are checked and fixed as shown in figure

Geometry cleanup as shown in figure :

STEP 2:

Midsurface Extarction

The midsurface of all 4 Part's are extarcted separately.

Select offset midsurface option from the face's module is used to extarct mid surface of each part.

The face's to be extract by the thickness pf ecah part i.e Actual thickness divided by 2 then the midsurface will form.

MIDSURFACE OF LOWER HOOD

MIDSURAFCE OF OUTER HOOD

MIDSURFACE OF HINGE REINFORCEMENT

MIDSURFACE OF LATCH REINFORCEMENT

STEP 3 :

Assinging new PID

Goto face's set PID option select the component to assing PID create new PID.

The thickness of each part are entered and their type is chosen as PSHELL.

STEP 4:

Meshing

Before going to mesh give mesh parameter's and quality criteria

Now go with best mesh option create a mesh and element type is chosen as mixed

Reduced tria's and eliminate rotating quad's

Each part is separately meshed by given quality criteria as shown below

LATCH REINFORCEMENT

HINGE REINFORCEMENT

UPPER HOOD

LOWER HOOD

RESULT :

All part's are successfully meshed as per the given quality criteria .

LEARNING OUTCOMES :

1. Learned how to fix the geometrical error's to clean up the geometry .
2. Learned how to create midsurface for the each component .
3. Learned how to assinged new PID .
4. Learned how to meshed as per the given quality criteria .
5. Learned how to reduce opposite tria's and rotating quad's .

CONCLUSION :

The mesh is created for the given model as per the given quality criteria using ANSA.