Hello @gm1,
in Karamba3D you could calculate the structure as a shell with an orthotropic material. In the current WIP version of Karamba3D (see www.karamba3d.com/nightly-builds) it is possible to define materials with different strength values in tension and compression and different yield criteria.
One could either use the cross section optimizer to look for the minimum wall thickness or use a uniform wall thickness and optimize the geometry towards a given maximum value of utilization.
Best,
Clemens
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