Week - 4 - 2D meshing for Plastic components
AIM:- To mesh the given plastic bottle cap model take the mid surface and assign thickness.Quality criteria as shown below.
|
S.No |
Quality Criteria |
Value |
|
1 |
Target/Average length |
1 |
|
2 |
Minimum Length |
0.5 |
|
3 |
Maximum Length |
3 |
|
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 Tria Angle |
120 |
|
10 |
Tria Percentage |
15 |
PROCEDURE:-
1.First import the bottle cap model in ANSA.
2.Next check the geometry goto Tools→Checks→Geometry→Execute as shown below.
In the model, no errors are there so the given bottle cap model is good.
3.Next go to the mesh→perimeters→length→perimeters→Length 0.5→Ok as shown below.
4.Repeat the above step for macros also as shown below.
> Before
>After.
5.Next creating the mid surface of the Bottlecap.
6.Goto the Topo→Faces→Offset→select face→Offset value→Ok as shown below.
7.Fallowing the above step all faces are offset as shown below.
8.Creating the mid surface followed by geometry clean up also as shown in the above image.
9.Next go to Quality criteria press F11 set the given quality parameters as shown below.
10.Next go to the mesh parameters set values as shown below.
11.Next go to the Mesh→Mesh generation→best→select surface as shown below.
In the above image, the mesh flow is not proper and more trias coming so change the mesh goto shell mesh>reconstruction as shown below.
see the difference here the mesh flow is good and fewer trias are formed.
12.Follow the above step mid surface has meshed as shown below.
13.Next assign the thickness of each face.
14.First measure the thickness takes that value to create a new property for only that face as shown below.
15.Fallowed the above step assign the thickness for all as shown below.
16.Finally complete the mid surface, mesh and assigning the thickness on the bottle cap model as shown below.
LEARNING OUTCOMES:-
1.How to use different tools for creating the mid surface and assigning the thickness.
2. How to create a surface using a mid curve, to transform the pattern of surface in the model.
CONCLUSION:-
The given bottle cap model is meshed with given quality criteria, created mid surface and assigning various thicknesses.
