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I have been researching Miura pattern origami as a structural solution for rapidly deployable structures. Miura ori are interesting as structures due to their ability to develop from a flat surface to a 3D form, and become fully rigid, with no degrees of freedom, once constrained at certain points. Physical and digital experiments with Miura Ori have taught me that certain topographies can be generated by developing a modified Miura pattern. With the help of Tomohiro Tachi’s excellent research on the subject of curved Miura ori, including his Freeform Origami simulator (http://www.tsg.ne.jp/TT/index.html) I have learned that Miura ori surfaces that curve in the X and Y axes can be generated by modifying the tessellating components, however these modifications require some flexibility in the material, or looseness of the hinges. As a system for a rapidly deployable structure, I am most interested in the potential for the modified Miura ori to work as a structure built with cheap, readily available sheet materials which are generally planar, so I will continue to develop this system as a rigid panel system with loose hinges that can be tightened after the structure is deployed. In order to test the crease pattern’s ability to form a curved surface, I have defined a component within the Miura pattern that can tessellate with itself. The radius of this component’s developed surface is measured as it is gradually altered.
With the objective being to develop a system for the construction of a rapidly deployable structure, I have also been interested in understanding the Miura ori’s characteristics as it is developed from flat. Physical and digital tests were performed to determine the system’s willingness to take on a curve as its crease angles decrease from flat sheet to fully developed. I found the tightest radius was achieved rapidly as the sheet was folded, with the radius angle reaching a plateau. This is interesting from the perspective of one with the desire to create a structure that has a predictable surface topography, as well as from a material optimisation standpoint; the target topography can be achieved without the wasteful deep creases of an almost fully developed Miura ori. With the learnings of the modified Miura ori tests in mind, a simple loose hinged cylinder is simulated. As the pattern returns on itself and is fastened, the degrees of freedom are removed and the structure is fully rigid. A physical model of the system was constructed with rigidly planar MDF panels and fabric hinges. The hinges were flexible enough to allow the hinge movement necessary in developing this particular modified Miura ori, however some of the panels’ corners peeled away from the fabric backing as the system was developed from flat. A subsequent test will seek to refine this hinge detail, with a view to creating a scalable construction detail that will allow sufficient flexibility during folding, as well as strength once in final position.
First developed in 1979 by Dániel Erdély the Spidron is created by recursively dividing a 2-dimensional hexagon into triangles, forming a pattern that consists of one equilateral followed by one isosceles triangle. The resulting form is of six Spidron legs that, when folded along their edges, deform to create a 3-dimensional Spidron.
Initial investigations into the Spidron system using paper resulted in irregular shapes that could not be predicted, and therefore replicated precisely. Progressing onto using rigid materials allowed the system to be broken down into six components, removing unnecessary triangulated fold lines, and developing latch folded Spidron that is precisely the same as that formed parametrically.
This relationship between parametric and physical tests of component based Spidrons in both regular and irregular hexagons, as well as various other equal-sided shapes, has enabled the development of large scale models concluding thus far in a 1:2 scale version being built which will continue to be developed as a pavilion for submission to the Burning Man festival.
In parallel there has been an investigation into the system at a smaller scale allowing for the Spidron nest to be made as one component. In order to achieve the 3-dimensional Spidron form lattice hinges, also known as kerf folds, have been employed. Rigorous testing into the best cutting pattern have resulted in a straight line cutting pattern that allows for bending on multiple axis at once.
Developing this smaller scale system for submission to Buro Happold the intention is to create an arrayed system that is a conglomeration of both regular and irregular spidrons with varying depths and apertures that are able to integrate various display models etc. within.
We just finished Brief01:System/Sci-Fi and starting Brief02:Buro/Burn – Here are couple pictures of our last tutorials by Toby Burgess. Students will be uploading their systems on Monday on this blog!
Radiohead have invested their financial resources into the development of Processing ( http://www.processing.org ). They have been using the capabilities of the software (3D tracking and sound input) in some of their music videos with minimal after effects.
We had our final crit today! Great projects concluding our brief2B:Realize. Here are couple pictures. Thank you very much to our external critiques Daewha Kang (Associate Zaha Hadid Architects), Lawrence Friesen (GenGeo), Stephen Melville (Director Ramboll UK), James Solly (Buro Happold), Michael Clarke and to our colleagues Anna Liu and Roberto Botazzi.
Our studio is back after a month of holidays. Here are couple pictures from our tutorials today. Impressive progress from our students including a 3D printed potato-based fractal civilization (Andrei Jipa), a series of recursive bamboo structures for the Durga Puja festival (Dhiren Patel), an origami roof for the fashion week (Charlotte Yates), a spiky eco-retreat to meet the Sami people (Natasha Coutts), a temple for the Burning Man festival made of reciprocal plywood components (Joe Leach), a hypar tower for the Damyang Bamboo festival (William Garforth-Bless), a Pop-Up book drop pavilion (Ieva Ciocyte), a surreal Dali Museum in the Park (Lorna Jackson), a promenade concert in Hyde Park (Sarah Shuttleworth) and many more… We are so excited by the diversity of projects this year and the clear continuity between our brief2A and brief2B. Looking forward to the final crit on Thursday 15th May!