Print Email Facebook Twitter Assembly of shells with bi-stable mechanism Title Assembly of shells with bi-stable mechanism Author Chiang, Y.-C. (TU Delft Building Services) Mostafavi, Sina (TU Delft Architectural Engineering; TU Delft Digital Architecture) Bier, H.H. (TU Delft Digital Architecture) Contributor Hesselgren, Lars (editor) Kilian, Axel (editor) Malek, Samar (editor) Olsson, Karl-Gunnar (editor) Sorkine-Hornung, Olga (editor) Williams, Chris (editor) Date 2018 Abstract Shell structures achieve stability through double curvature, which brings about construction challenges. This paper presents a strategy to design and assemble a panelized shell with a bi-stable mechanism aiming to make the assembly process more efficient. The developed prototype has two states of flat and three-dimensional stable configuration. This reconfiguration is achieved by reconfiguring the flattened surface of a shell into a three-dimensional structure using embedded bi-stable joints. In order to apply this approach on free-form double curved shells, a workflow to translate a shell into its flattened state is developed. Discrete components are connected using bi-stable joints, where each joint has two stable states. Once the joints are mechanically activated, they guide the adjacent components contracting and rotating into the three-dimensional configuration. Initial explorations indicate that an edge of a shell will turn into an isosceles trapezoid in the flattened configuration while a node of a conical mesh will turn into a cyclic quadrilateral in the flattened configuration. The flattening process is demonstrated using a free-form vault, while scaled physical porotypes are 3D printed with PLA and tested. Future studies require exploration into applications with construction materials at larger scales. Subject bi-stable mechanismreconfigurable assemblyshell structurefree-form constructionprogrammable material To reference this document use: http://resolver.tudelft.nl/uuid:03537e89-c2c4-4fad-bc1f-131cd733a06c Publisher Chalmers University of Technology, Chalmers, Sweden ISBN 978-3-903015-13-5 Source Proceedings of Advances in Architectural Geometry 2018 (AAG 2018) Event AAG 2018: Advances in Architectural Geometry 2018, 2018-09-22 → 2018-09-25, Göteborg, Sweden Part of collection Institutional Repository Document type conference paper Rights © 2018 Y.-C. Chiang, Sina Mostafavi, H.H. Bier Files PDF Paper_AAG_504188_Fulltext.pdf 1.7 MB Close viewer /islandora/object/uuid:03537e89-c2c4-4fad-bc1f-131cd733a06c/datastream/OBJ/view