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D. Pellis, H. Pottmann:
"Geometry and statics of optimal freeform gridshells";
in: "Baustatik - Baupraxis 14", herausgegeben von: Bischoff, Manfred; Scheven, Malte; von Oesterle, Bastian; Institut für Baustatik und Baudynamik, Universität Stuttgart, Stuttgart, 2020, ISBN: 978-3-00-064639-3, S. 423 - 430.

We present our recent results on the geometric and static optimization
of freeform load-bearing architectural skins. An efficient design strategy is the use of planar cladding panels supported by a prismatic framework substructure with optimized static performance. We show how these structures can be achieved discretizing membranes where principal stress and curvature directions coincide, and the absolute principal stresses are minimized. We outline then a design workflow and we provide some architectural examples.

http://dx.doi.org/10.18419/opus-10762

https://elib.uni-stuttgart.de/bitstream/11682/10779/3/BB14_Tagungsband.pdf