Auxetic structures are a fascinating class of metamaterials whose geometric logic produces the unconventional behavior of expanding laterally when stretched longitudinally, and vice-versa, via scale-independent material deformation. While auxetic metamaterials are increasingly being translated into industrial applications, including textile, automotive and biomedical engineering, among others, their architectural exploration remains limited. As an emerging area of geometric research, they offer a compelling yet underexplored avenue for rapid deployment of complex forms and kinetic architecture. Computational design of auxetic geometries that encode tunable deformation behavior into architectural surfaces opens possibilities for bistable kinetic envelope systems. This enables responsive architectural motion and deployable form-finding driven by geometric logic rather than conventional mechanical actuation or material intensive formwork. Their capacity for surface expansion enables deployment of volumetric space, reframing architectural movement as an intrinsic spatial operation rather than an applied mechanism. Architectural applications of auxetics have remained largely conceptual or limited to non-structural material studies. This project advances auxetics into a robust architectural context through the computational design, fabrication, and assembly of a scalable, parts-based building system. The investigation is structured in two phases: digital modelling and simulation, followed by fabrication, assembly, and deployment testing. A parametric workflow was developed to reverse-engineer a set of standardized pattern units that, when assembled, deploy into a desired target surface. These pattern units were fabricated using a combination of laser cutting and 3D printing tool processes and then assembled flat in their contracted state. When subject to uniaxial tensile loading, the assembly expanded and could then be lifted to deploy into its prescribed curved form. While this project demonstrates a proof of concept for the auxetic building system achieving a specific target geometry, the potential for generating diverse complex forms across architectural scales is extensive. By encoding parametrically tunable deformation directly into the assembly’s geometric logic, the system achieves predictable, bistable behaviour without reliance on a network of external actuators or temporary formwork. This work supports the advancement of materially intelligent structures, where motion, form-finding, and spatial transformation emerge from the structure itself, enabling responsive, deployable, and expressive architectural envelopes.
Lydia Elbatarny (Thu,) studied this question.