posted by Chris Chalmers
This is an exploration of geodesic curves and their use in the fabrication of free form shapes. For this study, I adapted a grasshopper definition by Lorenz Lachauer of Eat-a-Bug. Geodesic curves are defined as the shortest path between two points along a curved surface. This has some connotations for structural efficiency, however the interesting thing for me is that when unrolled, the lines are perfectly straight. Linear components are beneficial in two ways: first, they can be nested efficiently on sheet material (see the strips laid out above). Second, you don’t need fancy CNC machinery to fabricate them. All you need to do it manually is a set of dimensions: lengths of strips and distances between their attachments.
download the grasshopper definition : TurtleTest5.ghx
Buckminster Fuller’s domes popularized Geodesic geometry, but they are only half the story. More varied versions have been used by Frei Otto, Shigeru Ban and HUT Wood Studio.
The examples above use a large number of regularly placed start points. The example below, perhaps more interesting, used fewer start points but allowed the strips to wrap around the surface a few times. If we change the location of the start points and the angle of the strips, this could be used to concentrate material in key places, making structure more responsive than a regularized mesh. Obviously lots more to explore here.