Chiral flexural waves in structured plates: directional localisation and control
| Autor: | Daniel Colquitt, Natalia V. Movchan, Alexander Movchan, Giorgio Carta, Ian S. Jones |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Logarithm Mechanical Engineering Dirac (video compression format) 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics Physics::Classical Physics 01 natural sciences Rod 010305 fluids & plasmas Connection (mathematics) Physics::Geophysics TA Flexural strength Mechanics of Materials 0103 physical sciences Waveform 0210 nano-technology Dispersion (water waves) Anisotropy |
| Zdroj: | Journal of the Mechanics and Physics of Solids |
| ISSN: | 0022-5096 |
| Popis: | A new class of elastic waveforms, referred to as “chiral flexural waves”, is introduced for a multi-structure, which encompasses an elastic plate connected to a system of elastic flexural rods with gyroscopic spinners. The junction conditions describing the connection between the plate and the thin flexural rod require logarithmic asymptotics. The directional preference of the system is governed by the motion of gyroscopic spinners. For doubly-periodic chiral multi-structures studied here, parabolic modes associated with strong dynamic anisotropy of Bloch–Floquet waves are identified. Closed form analytical findings are accompanied by numerical simulations, which identify one-way flexural waves propagating along a straight interface in a flexural chiral system, without requiring the presence of Dirac cones on the dispersion surfaces. © 2020 Elsevier Ltd |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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