Paper by Erik D. Demaine
- Reference:
- Alfonso Parra Rubio, Klara Mundilova, David Preiss, Erik D. Demaine, and Neil Gershenfeld, “Kirigami corrugations: strong, modular, and programmable plate lattice”, in Proceedings of the ASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE 2023), Boston, Massachusetts, August 20–23, 2023.
- Abstract:
-
Plate lattices are high-performance lightweight structures, exhibiting up to
twice the yield strength and stiffness compared to truss lattices of similar
geometric arrangement and relative density. Although they are of great
interest for research and structural engineering applications, their complex
manufacturing and assembly processes limit their practical use, with sandwich
panels being an exception. This paper presents a novel approach to the design
and modular assembly of folded custom 3-dimensional plate lattices as
structural corrugations for use in structural engineering and robotics
applications. The plate lattice structural corrugation uses a building block
strategy and incorporates custom modified unit cells based on the Miura-ori.
This transformation involves expanding the top and bottom zig-zag crease lines
into facets and orienting them in space. The resulting modified pattern is
referred to as the Kirigami Expanded Miura. The unique structure of these
lattices not only provides exceptional mechanical performance as static
structures, but also allows for the design of anisotropies in their flexural
stiffness by alternating between the Maxwell criterion on bending-dominated or
stretch-dominated cells. These anisotropies can have value differences of up
to 24 with the same geometry, making them ideal for robotic morphing
applications. We validate our proposed technology by characterizing the
mechanical performance of this new building system and comparing it with
state-of-the-art corrugations. We demonstrate the potential of this approach
by designing, manufacturing, and modularly assembling multiple structures and
robots with single and double curvature.
- Availability:
- The paper is available in PDF (7323k).
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Last updated July 23, 2024 by
Erik Demaine.