Challenge

Assignment 1-2D Meshing Challenge

AAbhijeet Madhukar Kolawale23 Dec 2021

Aim:

To perform preprocessing on all three models given according to quality criteria required for this challenge.
Objective:-

To import the model and perform the geometrical cleanup.
To extract mid surface for all the three components.
To perform geometry cleanup on the mid surface as well like defeature and holes less than 5 mm.
To mesh the mid surface according to given quality criteria.
To clear all the failing elements from quality.
To assign the thickness to mesh to meet the component requirements.

Procedure:-

Model 1:-

Stage-1
Import the model

Tool we use to import in the way: File >> Import >> Import Model >> File type >> Open File.

Now we will check for the solid body after converting it into by topo model.
After putting the model in by topo mode if the model is having solid then it will show in green colour.
Delete the solid.

Stage 2-
Geometry cleanup :

1. Free edges.
For fixing free edges
Go to geometry > quick edit > Toggle > select the red lines > middle click

2. Extra surfaces.

Delete extra surface

3. Unnecessary surfaces.

Trim unnecessary surface

4. Missing surface:-

Fill the surface by fill surface

Stage-3
Midsurface extraction

Use auto mid surface extraction since the thickness is uniform.
Go to geometry>midsurface > extraction type as skin midsurface > auto extract

Geometry cleanup on the mid surface:-

As we can see there are most of the lines are closer to each other in respect to meshing.
So toggle those lines in order to maintain features.
Remove hole less than 5mm.

Stage-4
Meshing:-

Given Quality criteria for this model:

Target Element Length = 5 Units

1 Min.Length 3.5mm
2 Max.Length 7mm

Now we will start meshing the components part by part.
And during meshing key points we need to take care about it.

Stage-5
Assigning thickness:-

To assign the thickness create property first

Give thickness of property

Follow same procedure other two models:-

Model-2
Stage-1: Import

Stage-2:

Midsurface extraction

Stage-3:

Geometry cleanup

Stage-4:

Meshing

Stage-5:

Assigning Thickness

Model-3
Stage-1:

Model import