Cantilevered Slab Optimization - Branching Pattern

Grasshopper Karamba3D
1

Hello,

I am looking to optimize the structure of a cantilevered slab.

I have found a way to do this using Millipede, particularly referencing the “004_leaf” example included by the developers.

However, I’d like to use Karamba instead given that the software seems to have a fresh and vibrant support community online.

Is there a way that I can achieve the same branching pattern which emerges through the Millipede example by using Karamba? I have included an attempt at setting up the problem, but would appreciate any and all guidance. It seems that I cannot “Step” in the same way I can in Millipede to allow for the branching pattern to emerge. Is there analogous functionality?

Thank you.

Regards,
James

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image.png788×594 164 KB

Setup in Millipede and the output (after pressing the Step button on the FE Solver several times)

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Mimicking (or at least attempting to) the setup within Karamba.

2

I have also included my .gh file for reference:

004_leaf_Karamba_Comparison.gh (41.5 KB)

4

Hi @jptroise,
you can use the cross section optimisation to achieve something similar. As I do not have milipede, I am not sure of the loading that you used. However you can refer to the example to see the process of this optimisation.

004_leaf_Karamba_Comparison-mt.gh (57.0 KB)

5

Hello @matttam ,

Thank you for your response and help. Is it possible to show a screen shot of your results, as I do not currently have the full version of Karamba and am thus limited by number of shell elements?

In the meantime, I will work with a low-resolution version of my model in order to understand the optimization process you have laid out. Thanks again.

Regards,
James