Corner Topology Makes Woven Baskets into Stiff, yet Resilient Metamaterials

TL;DR

This paper demonstrates that 3D woven basket-like structures can achieve high stiffness and exceptional resilience, offering a new approach to designing durable, load-bearing metamaterials with applications in robotics and engineering.

Contribution

It introduces a modular platform for converting 2D woven sheets into 3D metamaterials with enhanced resilience and comparable stiffness to continuous structures, inspired by traditional basket weaving.

Findings

Woven corners exhibit axial stiffness similar to continuous structures under small deformations.

Woven ribbons can undergo elastic buckling, enabling repeated compression without damage.

The modular platform enables creation of damage-resilient, load-bearing metamaterials for various applications.

Abstract

Basket weaving is a traditional craft used to create practical three-dimensional (3D) structures. While the geometry and aesthetics of baskets have received considerable attention, the underlying mechanics and modern engineering potential remain underexplored. This work shows that 3D woven structures offer similar stiffness yet substantially higher resilience than their non-woven continuous counterparts. We explore corner topologies that serve as building blocks to convert 2D woven sheets into 3D metamaterials that can carry compressive loads. Under small deformations, the woven corners exhibit axial stiffness similar to continuous structures because the woven ribbons are engaged with in-plane loads. Under large deformations, the woven corners can be compressed repeatedly without plastic damage because ribbons can undergo elastic local buckling. We present a modular platform to assemble woven corners into complex spatial metamaterials and demonstrate applications including damage-resilient robotic systems and metasurfaces with tailorable deformation modes. Our results explain the historic appeal of basket weaving, where readily available ribbons are crafted into 3D structures with comparable stiffness yet far superior resilience to continuous systems. The modular assembly of woven metamaterials can further revolutionize design of next-generation automotive components, consumer devices, soft robots, and more where both resilience and stiffness are essential.