A wideband phononic crystal-integrated Kresling origami wave converter
Journal
International Journal of Mechanical Sciences
Journal Volume
318
Start Page
111556
ISSN
00207403
Date Issued
2026-05-15
Author(s)
Abstract
Longitudinal-to-torsional wave mode conversion has great potential in many engineering applications and has attracted much attention in scientific fields. Although several methods have been proposed to achieve complete mode conversions from longitudinal waves to torsional waves, the related conversion frequency range is often narrow, which largely limits practical applications of these methods. In this paper, by integrating a phononic crystal to a Kresling origami with a compression-twist coupled deformation characteristic, we achieve a complete longitudinal-to-torsional mode conversion within a wide frequency range. Specifically, the Kresling origami first converts the longitudinal waves to combined longitudinal-torsional waves, and the matching phononic crystal then filter out the longitudinal wave components while allowing only torsional waves to pass through. To study the wave mode conversion, an equivalent longitudinal-torsional coupled rod theory of the Kresling origami has been constructed based on the spectral element method. Additionally, by utilizing this integrated design, we further achieved asymmetric transmissions of elastic waves. An experimental system was set up to verify the theoretical and simulation results, showing that the proposed combination design can convert longitudinal waves to torsional waves from 12,910 Hz to 18,178 Hz. The proposed method has great potential in the application of ultrasonic machining and structural health monitoring.
Subjects
Asymmetric transmission
Mode conversion
Origami structure
Phononic crystal
Spectral element method
Wave coupling
Publisher
Elsevier Ltd
Type
journal article