Geodesy: Self-rising 2.5D Tiles by Printing along 2D Geodesic Closed Path

  • J. Gu, D.E. Breen, J. Hu, L. Zhu, Y. Tao, T. Van de Zande, G. Wang, Y.J. Zhang and L. Yao, "Geodesy: Self-rising 2.5D Tiles by Printing along 2D Geodesic Closed Path," Proceedings of CHI Conference on Human Factors in Computing Systems, May 2019, Paper No. 37.

    Thermoplastic and Fused Deposition Modeling (FDM) based 4D printing are rapidly expanding to allow for space- and material-saving 2D printed sheets morphing into 3D shapes when heated. However, to our knowledge, all the known examples are either origami-based models with obvious folding hinges, or beam-based models with holes on the morphing surfaces. Morphing continuous double-curvature surfaces remains a challenge, both in terms of a tailored toolpath-planning strategy and a computational model that simulates it. Additionally, neither approach takes surface texture as a design parameter in its computational pipeline. To extend the design space of FDM-based 4D printing, in Geodesy, we focus on the morphing of continuous double-curvature surfaces or surface textures. We suggest a unique tool path - printing thermoplastics along 2D closed geodesic paths to form a surface with one raised continuous double-curvature tiles when exposed to heat. The design space is further extended to more complex geometries composed of a network of rising tiles (i.e., surface textures). Both design components and the computational pipeline are explained in the paper, followed by several printed geometric examples.

    Last modified on May 2, 2019.