Shape-morphing structures based on perforated kirigami
Yunlan Zhang, Jingyi Yang, Mingchao Liu, Dominic Vella · Extr. Mech. Lett. 56, 101857 (2022) · 2022
Perforated kirigami uses a designed porosity distribution (via tapered-width cuts with uniform thickness) to tune bending stiffness and achieve target axisymmetric 3D morphing shapes.
Plain English summary
Why this matters
Key findings
- An inverse design framework is developed to predict the 2D cut pattern that generates a desired axisymmetric 3D shape using the tapered elastica formalism.
- Perforated kirigami enables target morphing without variable-thickness fabrication by using tapered-width perforations to create a porosity distribution.
- The porosity distribution can be calculated from the theoretical model and is used to tune bending stiffness for desired buckling deformation.
- Finite element simulations and physical experiments are used to verify the theoretical approach.
- Indentation tests (in FEM and experiments) assess loading-bearing capacity, including rigidity vs. aspect ratio for morphed half-ellipsoids.
Limitations
The abstract does not specify material systems, fabrication constraints beyond laser cutting, the range of achievable shapes/parameters, or long-term durability/fatigue under repeated morphing; it also does not quantify performance beyond the described indentation tests.
Publication
- Publisher
- arXiv
- Journal
- Extr. Mech. Lett. 56, 101857 (2022)
- Publication date
- June 29, 2022
- Research type
- Paper
- arXiv
- 2206.14492
- Access
- open
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