An origami longitudinal–torsional wave converter
Journal
Extreme Mechanics Letters
Journal Volume
51
Start Page
101570
ISSN
23524316
Date Issued
2022
Author(s)
Abstract
Wave mode conversion has received great attention in the past few years. In this work, we propose a Kresling origami wave-mode converter which can transform the longitudinal waves of one rod to hybrid or near-pure torsional waves in the other one. Both the converted transient and steady-state wave propagation as standing waves in the proposed rod system are studied with a special focus on the frequency-dependent wave-mode contributions. With a definition of a frequency-dependent conversion ratio of longitudinal wave to torsional wave (L–T Ratio), we investigate the generation of the combined or near-pure torsional waves. The longitudinal–torsional wave conversion frequencies are tightly associated with the initial geometrical parameters of the Kresling origami. An experimental system based on optical fiber Bragg gratings (FBGs) is set up to verify the Kresling-ori wave converter. The longitudinal–torsional wave converter based on the origami engineering has potential applications in wave manipulation, wave energy distributing, or unidirectional wave transmission.
Subjects
Elastic Waves
Origami
Torsional Waves
Wave Mode Conversion
Fiber Bragg Gratings
Geometry
Wave Energy Conversion
Wave Propagation
Wave Transmission
Frequency-dependent
Longitudinal Waves
Mode Converter
Origami
Rod System
Standing Wave
Steady-state Waves
Transient State
Wave Mode Conversions
Wave Modes
Elastic Waves
Publisher
Elsevier Ltd
Type
journal article