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Reduction of vortex-induced vibrations by locally resonant metamaterials

机译:通过局部共振超材料减少涡旋诱导的振动

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Flow-induced noise and vibrations are present in a variety of sectors such as automotive and aerospace, where reducing the noise and vibration harshness behavior has become a challenging task. Due to the current ecological trends towards the use of lightweight designs, novel low mass and compact solutions are sought to improve the dynamic behavior of such designs. Locally resonant metamaterials have recently come to the fore as potential candidates due to their superior noise and vibration reduction performance as a result of their ability to create stop band behavior, i.e. frequency zones of strong vibration and/or noise attenuation. This paper experimentally investigates the potential of using locally resonant metamaterials to improve the flow-induced vibrations phenomena under the influence of vortex-shedding.
机译:流动引起的噪声和振动存在于诸如汽车和航空航天的各种部门中,其中降低噪音和振动的行为已成为一个具有挑战性的任务。 由于目前使用轻质设计的生态趋势,寻求新的低质量和紧凑的解决方案来提高这种设计的动态行为。 由于其产生停止频段行为的能力,即强度和/或噪声衰减的频率区域,局部共振超材料最近由于其噪音和减振性能而导致的潜在候选者。 本文实验研究了使用局部共振超材料的潜力,以改善涡旋脱落影响下的流动诱导的振动现象。

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