Manipulation of flexuralwaves in plates has attracted extensive attention for vibration isolation and structural health monitoring. However, existing methods are difficult to be applied in practical engineering due t...
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Manipulation of flexuralwaves in plates has attracted extensive attention for vibration isolation and structural health monitoring. However, existing methods are difficult to be applied in practical engineering due to their bulky size, complex structure, and damage to the overall carrying capacity. In this work, we introduce a different way to steer flexuralwaves in plates to realize arbitrary isolators and waveguides without fabrication limitations and destruction of *** to appropriate impedance mismatch, periodic and sparse array of subwavelength and unitary units are preliminarily devised to isolate flexuralwaves, in a way of omnidirectional reflection. We then utilize this feature to realize various ultrathin isolators and waveguides. As verification, a circular isolator and a Z-shaped waveguide are designed and tested, respectively. They numerically and experimentally show excellent isolating and waveguiding performance. It opens up a range of opportunities to mitigating and guiding the energy in plate-like bearing structures.
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