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Topology optimization

Hello! I am trying to optimizate a bellcrank for a formula student car and I am a beginner using Hyperworks. After doing some exercises from Altair Certification I am not able to do anything fine...

I have done a model and I want to do a topology optimization in order to minimize the weight. Theoretically, the holes shouldn't be modified. After running the Optistruct I cannot get any clear result... ¿Can anybody look at my model and tell me who I need to change/add?

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QuyNguyenDai

Theoretically, the holes shouldn't be modified.

Yes, that's theory /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' /> But in your FEM, do you define as 'non design' component?

Altair Forum User

Hi,

You are applying load on nodes of the hole(s) and this will deform hole.

Altair Forum User

Yes, that's theory /emoticons/default_smile.png' srcset='/emoticons/smile@2x.png 2x' title=':)' width='20' /> But in your FEM, do you define as 'non design' component?

I tried to, but I really don't know how to do it. Could you easily explain me how to do it?

Altair Forum User

Hi,

You are applying load on nodes of the hole(s) and this will deform hole.

Yes, I know it will be deformed. What I want is that the optimization doesn't delete the material around the hole in order to reduce the mass of the piece

Altair Forum User

Hi,

You can include few of the elements around the hole in non-design space.

Altair Forum User

Hi,

You can include few of the elements around the hole in non-design space.

Hi, thanks for your answer.

This problem is solved. Now what it is happening is that the holes are not conected with material. It is optimizated with material between two holes, but the one on the top is like 'flying'. Do you have any idea what can it be happening?

Altair Forum User

Hi,

From what you said, I understand that the holes are not connected with design space, correct?

You can use the Equivalnece option in Edges panel to connect them nodally. (Shift+F3) is the shortcut which leads to that panel.