Challenge

Week_8_Plastic Model_1

Aim :

Mesh the given plastic model as per given element size and quality criteria.

Procedure :

This is the image of CAD model.
This is a plastic part, as it has varying thickness in different parts of model.
Such as ribs, features and base has varying thickness.
So, to mesh plastic component we use different methods.
Among which is taking mid and then meshing which is a traditional way of 2D meshing.
But, extracting mesh and then meshing it will take much more time for plastic component because of its varying thickness.
Due to uneven thickness the mid might not be proper and due much more complexity the software could crash.
Thus, it is wise to have some other techniques also to mesh the model without extracting the mid surface.
Hence, we are trying new methods of meshing the surfaces which are as follows :
One of them is we can mesh the surface directly without extracting the mid surface and then offset it.
Or duplicate the surface and then offset it to the middle of the surface and then mesh it.
Or if possible we can create the surface of mesh with respect to available data like nods or lines and then mesh it.
And there may be few more and we are trying them all.
First of all mesh the 'A' surface and then offset it.
Generally we classify the surface as 'A' surface and 'B' surface.
'A' surface is the one which do not have any features on its side or which is easily assessible to it.
And the other one is 'B' surface which accomodate all the features and intricate surfaces.
Thus, it is always good to start with meshing 'A' surface.

In this method use ' element offset' and 'mesh edit' to extend the mesh and offset mesh.
In the same mesh the features and extend them to the base.
Make sure that the mesh we have extracted resembles with the parent geometry.
While meshing components or surfaces with different thicknesses separate the mesh elements in separate components so that respective thickness should be assigned to them.
After creation of mesh elements on the features at mid extend the surfaces to base mesh and then correct the mesh flow.
And at last deal with quality parameter.
At some areas quality has been compromised beacause it was causing damage to features and parent geometry.

While separating the components as per their thicknesses create component, material and properties and assign thickness according to it.

Result :

At the end of this challenge able to do mesh without extracting mid surface from parent geometry.
This method is much less time consuming as compared to former one.

Ship work like this
in your own course.