2025-08-28 ミシガン大学
Image credit: Tu & Filipov, 2025
＜関連情報＞
- https://news.umich.edu/woven-metamaterials-inspired-by-baskets-for-stiff-resilient-robots/
- https://journals.aps.org/prresearch/abstract/10.1103/9srl-9gsc
コーナートポロジーが編み籠を剛性かつ弾性のあるメタマテリアルに変える Corner topology makes woven baskets into stiff, yet resilient metamaterials
Guowei Wayne Tu and Evgueni T. Filipov
Physical Review Research Published: 26 August, 2025
DOI: https://doi.org/10.1103/9srl-9gsc
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 nonwoven continuous counterparts. We explore corner topologies that serve as building blocks to convert two-dimensional 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.
