Continuous body in Optistruct

Daniel Aigner
Daniel Aigner Altair Community Member
edited May 2022 in Community Q&A

I want to make a topological optimization of a body. Is there a function, where I can set a boundary condition, or smth. else, that the body after the optimization needs to stay one single continuous body?

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Answers

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited May 2022

    i'm sorry, i didn't get exactly what you mean by this. Can you give some examples?

  • Daniel Aigner
    Daniel Aigner Altair Community Member
    edited May 2022

    After the optistruct solver, i can open a session file to desplay the contour plot with element densities. Afterwards, when I display the Iso Plot, there are regions which do not connect. Please see the image attached. You can see the contour plot and applied iso plot with the element densities. 3 areas of high density, however, the bottom right is not connected to the other areas of high desnity.

    So, it would be of interest, if there is a function, which makes sure the model stays one continuous body. Or if I need to do this via adjusting the iso value.

     

    image

  • Adriano_Koga
    Adriano_Koga
    Altair Employee
    edited May 2022
    Daniel Aigner said:

    After the optistruct solver, i can open a session file to desplay the contour plot with element densities. Afterwards, when I display the Iso Plot, there are regions which do not connect. Please see the image attached. You can see the contour plot and applied iso plot with the element densities. 3 areas of high density, however, the bottom right is not connected to the other areas of high desnity.

    So, it would be of interest, if there is a function, which makes sure the model stays one continuous body. Or if I need to do this via adjusting the iso value.

     

    image

    The result is showing that no material would be necessary in this connection, probably because there is a connection of the bottom part to each structure.

    You cannot guarantee that there will be a connection there, if this is not structurally needed.

    What you could do is to divide/break your model, and leave a minimum amount of material as nondesign space, thus OS won't be able to remove a layer of material at the bottom, for instance.

    Let's say you cut a small layer of your bottom material, and leave it separated. So this small layer will be always there, no matter what.

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