The Design Of A Foldable Triangulated Scissor Grid For Single-curvature Surfaces
Free (open access)
K. Roovers & N. De Temmerman
Deployable scissor structures can repeatedly transform between a compact and an expanded state, leading to a broad range of architectural applications. During the past few decades, a myriad of different configurations and shapes have been proposed. However, many of them show problems either in the deployment process, during which additional stresses and deformations are encountered, or in the in-plane stability of the structure once erected, requiring extra bracing components to solve. One of us has developed a configuration, based solely on translational scissor units, that allows combining the benefits of a rigid triangulated grid and a stress-free deployment process for single-curvature geometries. We have created a novel general design method for generating this type of foldable scissor structure and have explored its full geometrical potential, as is presented in this paper. The benefits and special characteristics of this type of structure are also discussed. The proposed configuration allows generating a large variety of single-curvature shapes useful for creating mobile self-supporting shelters. Additionally, a scale model has displayed promising kinematical and structural behaviour. Therefore, a full-scale prototype will be developed in the near future. Keywords: foldable scissor structure, geometric design method, deployable shelter, triangular cells, translational scissor unit, double-layer grid.
foldable scissor structure, geometric design method, deployable shelter, triangular cells, translational scissor unit, double-layer grid.