Week - 4 - 2D meshing for Plastic components

AIM:

Check Plastic Bottle Cap model for geometric errors, create mid surface using suitable techniques. Assign PID, Thickness to mid surfaces, then mesh based on element Quality criteria.

OBJECTIVES:

• · To check and correct geometrical errors on the Plastic Bottle Cap model.
• · Generating Mid surface and geometry clean-up on the given component using suitable techniques
• · Assign PID and Thickness to components.
• · Generating mesh on the given component with low tria concentration

and proper mesh flow

BODY OF THE CONTENT:

The given model is the Plastic Bottle Cap model with various thickness.

This is the CAD MODEL,

Checked the Geometry using the tool [Checks--Geometry].

cleaned up the model by fixing all errors.

Took the mid surface of the parent object using various techniques like middle, offset, symmetry, rotation.

The model is almost symmetric.

Selected the best-cleaned upside among the sides of the parent component.

cleaned up the part by replacing the damaged face with New Faces.

Used Topo and Release Tools for cleaning up.

Took mid surface of this components using by Faces ---Middle

And select the 2 surfaces who’s mid was intended to take.

Took mid surface of this components using by Faces ---Offset

Gave the OFFSET Value that is half of thickness with sign correspond to direction.

Took mid surface of this entities using ‘Rotate’ command.

To Assign thickness for the varying thickness ribs like this, Split the surface into multiple surfaces by using the “CUT” command and gave different thickness values such that it captures varying thickness components in the best possible way.

Assign PID and thickness to each entity of same of parent thickness.

It started meshing with a component and moving outwardly.

Applied the all given elements of Quality Criteria by [Quality criteria--Shells].

Changed to Hidden Mood to identify the off elements and fixed using the Tools

in the Shell mesh they are Reconstruct, Smooth, Collapse, and in the Elements,

they are Split, Swap.

Completed the meshing of the symmetric part with low tria concentration and

proper mesh flow.

Used the tool [Transform--Copy--Symmetry--Mirror 3 points plane]

The 3 points in the symmetric object are at the ends and middle.

And meshed the remaining part to complete the meshing of the mid-surface.

CONCLUSION:

For the given Plastic Bottle Cap model, the mid surface after checking the geometrical errors, Assign PID, Thickness to mid surfaces meshed with the mid surface0.49% tria concentration, and proper mesh flow with the given element Quality criteria.

link:

https://drive.google.com/drive/folders/1NB8cKBugIVdZDZ_Vig1tKS8eNiL9cfUG?usp=sharing