Creating the design and non design spaces


Hello all,
I am new to topology optimization and I need your help to create the design and non-design spaces.
What is the best way to do this?
Should I create 2 different bodies in the part in Catia V5 in order to get 2 different components in Hypermesh, and then connect and mesh them?
In this case, how could I connect the 2 components?
Or should I create only one main body and define the non design space within Hypermesh? (But the design of the part is not simple. I fear this might be difficult)
Feel free to contact me if I'm not clear enough
Thank you very much
Best regards
Florian


Dear Tinh,
Thank you very much for your answer.
But how do you share their nodes?
Do you mean that I have to mesh both components to create nodes on each of them and then share those nodes?
Thanks a lot


The problem is that there are far too much nodes on the surfaces I would like to connect...
Is there a way to select all nodes from a defined surface?
Is it possible otherwise to merge surfaces? It sounds easier for the part I work on!
Thanks a lot again


I think I found a way to achieve what I want through the boolean operations in the solid edit tab.
I choose the advanced operation type, the A+B operation and I combine through none.
With a simple part, it works perfectly.
However, when I try with the part I have to optimize, it says 'internal error'
Where could this error come from?
There are no other indications.
Is there a way to know what this mistake is caused by?
Thanks
Florian


Can you share a picture of the model?
Two components are far from each other and how the load will act on each other?


Thanks for your answers.
Sadly, for confidentiality reasons, I can't share the part with you, sorry.
However, the picture 1 at the end of this message is a small bit of the part for you to understand.
The 2 components are the pink and the brown ones.
I want to connect the 2 components ( create a partition surface between them).
With a simple design (pictures 2 and 3), it works without problem.
However, the part I work on is very complicated, and it keeps saying 'internal error'.
Sadly, I'm not able to identify where the error comes from.
<?xml version="1.0" encoding="UTF-8"?>
Hi,
You can connect 2 comps by sharing their nodes, binding with rbe2/rbe3,... or contact