Reconfigurable Extruded Polyhedron Joint

Extruded Polyhedron, a reconfigurable geometry based on the extrusion of each surface of a polyhedron along its normal direction. This paper introduces an extruded polyhedral joint that uses its own spatial structure to generate multiple states. The component mainly consists of an extruded polyhedron and is equipped with an optional adaptor to adapt to the various applicable situations. This research proposes that the formal deformation of the partially extruded polyhedron due to the instability of its own structure has the potential as a reconfigurable joint. In order to cope with the inevitable deformation of the extruded polyhedron branch cross-section during the overall deformation process, an adaptor- an indispensable component of the entire joint- is utilized at strategic branch locations. In addition, the reconfigurable methods and internal structure of joints are discussed in detail. Finally, some practical application scenarios of connection components and their advantages in some application scenarios are introduced.


  • Nanjing University


  • Shouwen Chi (Nanjing University), Heng Lu (Nanjing University),
  • Guohua Ji (Nanjing University), and Ziyu Tong (Nanjing University)


  • Chi, Shouwen, Heng Lu, Daekwon Park, 2020. “A Reconfigurable Joint Based on Extruded Polyhedron.” Proceedings of the 25th International Conference of the Association of Computer-Aided Architectural Design Research in Asia (CAADRIA), Bangkok, Thailand