Meshing a interior plastic component of a side door

Title :Meshing a interior plastic component of a side door.

Objective : To Mesh the interior plastic component of the side door of a passenger vehicle with given quality criteria. After meshing assign thickness and check if the geometry is captured properly.

Methodology :

Open the Step file in ANSA.

Run Geometry check.

• As we can see in this model there are several errors like Single cons, Triple cons, cracks , Needle faces and etc.
• so to correct it we have to use several tools.

1. Delete Unchecked faces.
2. Delete uneccesary extrusion,cons and etc.
3. Use Release to release triple cons.
4. Use Paste to paste nodes.
5. Topo to perform topology of given values.
6. Coons /fitted to create or patch new surface.
7. Use Surfaces>>Extrude>>Glide to create surface

Once all the errors are overcome , again perform Geometric check for each models.

We will get clean geometry with no errors.

• Once this is done ,Take the mid-surface manually, mesh the geometry with quality.
• Use Faces>>Mid-surf>>Skin

Then Mesh the mid surface with element length 4mm and mixed element.

• Assign seperate Pid as Manual-Inner-Panel.

Then,

• Take auto mid-surface and mesh the geometry with quality.
• Surface>>mid-surf>>Casting
• Select entire model.
• Give minimum thickness
• Select Element Type as Mixed
• give Target element length, as give 4mm

We will get the Mesh Mid surface.

• Assign the seperate Pid to this as Inner_panel.

Then we will get seperate 3 Pid\'s as

1. Outer Panel
2. Inner Panel
3. Manual Inner Panel

Set The quality Criteria for the geomerty as given

Target Element Length-4mm

S.N	Quality Criteria	Value
1	Aspect Ratio	3
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2mm
6	Max. Length	6mm
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	30
10	Max angle Tria	110
10	Tria %	15

• Then Check for errors according to Quality Criteria.
• Once all the values are set enable hidden mode to see all the values and error
• OFF indicates the errors with qualtiy criteria.
• So lets eliminate errors one by one using foolowing commands manually

1. Move surface
2. Reconstruct
3. Split

Then finally we will get error free surfaces as below.

One all the errors are eliminated use Compress to delete all uneccesary things.

Result: Hence , we will get the clean and Mesh models.

Conclusion:

• In this assignment we have cleaned all the models.
• Meshed the mid-surface with given perimeter.
• And also followed give quality criteria.

With this i have attached 3 .Ansa file

1. Trimmed_Door_Automatic.stp
2. Trimmed_Door_Manual.stp
3. Trimmed_Door_combine.stp

link :https://drive.google.com/file/d/1Si8RtqH8_U23JjqOFRK3HOLYg6WYKPu_/view?usp=sharing