Grasshopper GSA Form Finding Examples

I sat in on the recent Oasys GSA webinar on form finding conducted by Pete Debney, for those that missed it, don't despair.  Here's a recording of it:

I think it's a great resource and introduction/explanation of some of the form finding options provided by the Oasys GSRelax solver.

I also think each of the 3 example models are well suited to a parametric exploration using Grasshopper (using the Geoemetry Gym plugin to exchange the model data with GSA), and I'm posting these definitions here so you can try for yourself.

The gsa relax solver is not included in the standard evaluation license, but you can email them and ask for access to it.  I'm still enhancing the plugin in a few areas, you might see toolbars wander if you run GSA as a background service (ie if you don't have GSA running when you open the grasshopper definition, the plugin will start it in the background for you).  If you do have GSA open and Grasshopper appears to "freeze", activate GSA and close any confirmation dialogs that might appear.

Generating the model with geometric shapes using  BullAnt will be enhanced shortly, as well as any user requests so send them through.  Make sure you have latest GSA and BullAnt plugins from here: http://www.geometrygym.com/downloads and the definitions are derived on the basis of a rhino document being open with metre units.

Force Density form finding of a cablenet bridge.  Grasshopper Definition

Compression Shell form finding using Analysis properties.  Grasshopper Definition

Soap Film form finding of tensile membrane with back stay  Grasshopper Definition