Week - 4 - 2D meshing for Plastic components

Aim:

2-D Meshing of sheet metal (Bottle cap) by using ANSA software for the given Quality Criteria.

Pre-requisites:

-Geometry

-ANSA Software

Overview:

-Importing of geometry into ANSA software.

-Topology cleanup.

-Extraction of mid surface.

-Assigning property card for the mis surface.

-Creating a mesh for the geometry.

-Cleaning the mesh for the best result.

Procedure:

-Import the given geometry.

-The geometry is having one component all along.

-Check the geometry is the component is having any errors or not?

-So, split the component into two components and create the mid-surface.

-Now, as we have created the mid-surface for the geometry, we are good to go for meshing.

-But, before that how we have created the mid-surface. We, can see that there are some complicated surfaces to create a mid-surface. for, those of the complicated mid-surfaces we have to use the middle option from curves section and create a mid-curve and project the mid-curve to the perpendicular face and create a mid-surface.(This method is basically used for the threads).

-And one we can also create a mid-surface by using middle multi option where it can be used effectively.

-Now, assemble the entire mid-surface and check with the parent geometry that we have created a correct mid-surface or not. If, we have created a correct mid-surface we are good to go with the meshing, if not we need to make the proper changes and then go to meshing and make sure that the you are not missing any component either. As, there are many componets in the geomerty.

-Give the Quality criteria to the geometry.

-When you start meshing the geometry. First, mesh one mid-surface and try to clear all the off faces and make the mesh right.

-Then, start meshing the other mid-surface and clear all the off faces and make the mesh right.

-But, here you can see we have 26 off faces those are because of the mesh in between the triple cons so the off faces can be neglected as they cannot be rectified.

-Now, assemble both the mid-surfaces and check out the mesh flow.

-The mesh flow is all good

arning Outcome:

-In this geometry I have learnt to make the mid-surface for complicated surfaces and to refine the mesh near complicated surfaces.

Conclusion:

-2-D Meshing for a sheet metal(Bottle cap) has been generated for the given quality criteria.