Graphic statics
Graphic statics is an intuitive method of both visualizing and determining the forces in structures (Williams and McRobie, 2016) that has its roots in Varignon (1725)โs Nouvelle Mรฉchanique ou Statique in which a force polygon representing the geometry of the structure and a force diagram representing the interaction of forces are linked through geometric constraints (Axel Kilian, 2006), providing a graphic reading of the forces implicit in the structure. This method came to be the most used in engineering until the end of the 19th century with the apex of metal trusses construction; when concrete construction started to gain momentum, other methods based in analytical calculus eventually took over (Kurrer, 2008). With the advent of heavy computation, other applications of graphic statics were possible and, based in Williams (1986) suggestion of reciprocal figures, Block (2009b) creates a framework[1] that allows for rapid and interactive funicular structures design using graphic statics. The most significant software today that allows for the interactive three dimensional surfaces in equilibrium based in graphic statics is RhinoVault, and has been already successfully used in stereotomic projects such as the Armadillo Vault.
[1] This framework is called TNA (Thrust network analysis), and it is the theoretical base behind Matthias Rippmann (2016)โs RhinoVault software used to design funicular shells.
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