Challenge

Week 3 - 2D meshing for sheet metal

AAkhilesh R16 Jul 2021

ANSA

AIM

To extract the midsurface and mesh the given hood component under the given quality criteria.

PROCEDURE

The given component is import in ANSA.
Change the DRAW MODE to ENT.
Seperate the HOOD component by using store lock in look panel.
And take one component and start the process.
First geomentry clenanup is done for the component for that go to CHECKS-Geomentry and execute the process. If there is any openeing or free edges are present in the component are shown then to give fix option it will fix it automatically.
By using Fine option change the resolution of 3D curves or cons.
Measure the thickness of the component in utilities panel before extracting Midsurface.
Extract the midsurface by using offset option faces and use feature area to select one side of the component.Then click the midle mouse button and give the offset distance(T/2).And click no for deleting parent component option and then the midsurface is extracted.
After extrating midsurface use fine option to change the resolution of 3D curves.
Then change TOPO to MESH MODE and change the perimeter length 5mm for whole component by length option in perimeter panel.
Check all the surface by measure option if any surface is below 2mm use the JOIN or CUT option for defeture it.
By using the align option change the nodes parallel to near nodes.
And go to criteria file and change the vaue by given quality criteria.
Then give the value for mesh parameter in utilities panel.
Now generate the mesh for the given component by select the BEST option to mesh generation.
Change the SHADOW to HIDDEN mode for view the failed elements.
By using the Reconstruct option and change the meshflow for properly.
If there is any opposite tria or tria formed towards to perimeter must be changed by using swap, split,reconstruct option to change it.
And use the smooth option to smooth the mesh flow.
This process is done for all other components.
For inner and outer component is in symmetric component and above method is done for one side of the component only.
After meshing the one side of the component other side surface has to be deleted.
And go to transform option and copy the component and mesh by using entities option then click ok.
And deafult symmetry option is given the symmetry surface has been genetrated.
Then assign the property for the component in data base panel.
Give the proper thickness to all component and assign it.
Then assign the material STEEL for all component in materials in database panel.