generative modeling for Rhino
i have to model a "deflated" structure, in which there is the vacuum.
How can i do? by setting a negative pressure in the slider? it doesn't give a good result :(
yes, it`s a negative pressure, respectively the vector points inwards the volume you want to evacuate.
I think you have to deal with two options:
1) your structure have a bending stiffness (for instance a steel box) and is strong enough to resist.
than you will see only bending deformations which lead not to a form finding process.
2) your structure have only axial stiffness (spring forces, for instance a textile) and the pressure you put onto it results in compression forces in the structure. this is not possible for textiles (they can hold tension only). It´s only possible for perfect arches or spheres out of materials which can take compression (stone, bricks, concrete..).
in kangaroo it`s very difficult to build compression only structures without (at least a little) bending-stiffness. this is because there are stability-problems respectively buckling of the structure.
hope this helps a little
thank you very much pb!
i have to use the textile material. So if I understand correctly I can not simulate the textile, right?
so, i have to set a negative pressur on the blue line (the textile)
i'm going to try!
thank you very much