2D mesh generation and modelling of Plastic Container geometry

OBJECTIVE:

To generate the mid surface and geometry clean up on the plastic container component

To mesh the surfaces with proper mesh flow and qualifying quality parameters

QUALITY PARAMETERS:

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

PROCEDURE:

1. Defeature the surfaces: surface fillet and edge fillets and remove all fillets between 0-5mm.

2. Sectioning the whole component into 4 parts along the x and z-axis. from trim through planes command in surface edit.

3. separate the center ring into other component as it is the only unsymmetric surface in the component Also the cylinder is unsymmetric but can be dealt with some connectivity methods.

4. Delete the three halves.

5. extract the mid surface of the ring component and the quarter half of the component.

6.Perform manual mid surfacing in places where surface capturing is not as per parent geometry. Also, remove very small surfaces by replacing points to create a uniform surface.

7. Mesh with the given quality criteria.

[Note: The element size being too big for surfaces. This can be dealt with by scaling the component by 2 times then meshing.]

8. Check for element quality.

RESULT:

The mid surface and mesh generated is shown below

CONCLUSION:

1. mid surface generation

2. Meshing in given criteria