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Published on: February 4, 2018
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Tunable wave coupling in periodically rotated Miura-ori tubes
Sunao Tomita1, Tomohiro Tachi2
1Toyota Central R&D Labs Inc. 1-4-14 Koraku, Bunkyo-ku, Bunkyo-ku,Tokyo 112-0004, Japan.
Summary
Origami metamaterials with connected Miura-ori tubes demonstrate tunable elastic wave propagation. Their folding kinematics control wave modes and band gaps for adaptive wave manipulation.
Area of Science:
- Materials Science
- Mechanical Engineering
- Physics
Background:
- Origami structures offer programmable mechanical properties, with tunable elastic wave propagation in origami metamaterials being a key area of interest.
- The influence of tessellated origami kinematics on elastic wave propagation remains largely unexplored, presenting a gap in current research.
Purpose of the Study:
- To investigate the effect of connected Miura-ori tube kinematics on elastic wave propagation in origami metamaterials.
- To explore the tunability of band structures and band gaps through folding-induced kinematic changes.
Main Methods:
- Utilizing connected Miura-ori tubes with coupled folding/unfolding motions.
- Applying dispersion analysis with the generalized Bloch wave framework and bar-and-hinge models.
- Investigating the impact of altered kinematics on wave mode coupling and band gap formation.
Main Results:
- Kinematics of connected Miura-ori tubes generate wave modes with localized deformations, influencing global elastic deformation.
- Folding the tubes alters wave mode coupling strength, affecting band gap formation and tunability.
- Demonstrated adaptive and in situ tunability of band structures to control elastic wave propagation.
Conclusions:
- The kinematics of connected origami structures significantly influence elastic wave propagation.
- Folding-induced kinematic changes provide a mechanism for adaptive control of wave propagation and band gaps.
- This research enables the design of novel metamaterials with tunable properties for elastic wave manipulation.
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