Week_8_Plastic Model_1

Aim / Objective :
To extract midsurface for the given geometry
Mesh the plastic component with proper flow
To obtain the quality parameters with meshing
Assign thickness to the component

Component : B pillar

Element quality criteria :

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                               3 mm

7                   Max. Length                              7 mm

8                   Min angle Quad                          45

9                   Max angle Quad                         135

10                 Min angle Tria                             30

11                 Max angle Tria                            110

12                 Tria %                                        15

Procedure :

Steps 1 :

Import the geometry in hypermesh then deleted the solids by clicking the delete option
Then after surface extracted checked for the thickness
Under geom surface edit offset was used to extract the midsurface by giving half thickness value
Then checked for the surface for the reamining components to take midsurface

Steps 2 :
Then under geom midsurface used final edit tools result in current component
Selected the two sides to take the midsurface and extracted them
To attach to the base surface geom surface edit extend was used
Lines to extend over target surface was selected to extend them
This was repeated multiple times for the remaning component

Steps 3 :
For the component were midsurface was not easy to select the two sides
Under tool mask option was taken to take the midsurface and repeated the process
when the midsurface was completely extracted then feature lines were checked
Those failing for less than minimum were toggled geom quick edit

Steps 4 :
2D automesh was used to mesh by small parts and continue through out
Rebuid mesh was used where there elements failing
Some of the feature line needs to be captured on rib area
So on rib area elements fail could not avoided as features line captured
Remaining parts were rebuid to clear elements failure

Steps 5
Edges were cleared using replace points where required
Thickness was assigned to all component separately
Component and property created for different thickness for all parts
Thickness assigned to base by measuring parent and ribs throughout
Saved the file for submission

Learning outcomes :
Geometry cleaning the solid to surface component
Midsurface extraction for diffferent component varying thickness
Meshing throughout with proper flow quality criteria obtained
Thickness assigned by creating property to all component

Result :
The component midsurface extracted and meshed to obtain quality parameter and the file is attached for reference