the tension is obvious caused by the horizontal thrust, which would be most efficiently translated into vertical forces bij tension ring(s) in regular dome structures.. So the hexagonal grid automatically divides these forces among its members on the spot where its needed.
supprt/load conditions: simple pinned supports and a 1 N/m2 load
the deflection is very clearly demonstrated in this movie:
- exploring radiolarian skeletons (relation between their shape and forces acting on them)
- defining approach
- modelling a new parametric model according to approach
- testing, analysing different configurations
- genetic optimization loop