论文标题
彩虹反射和诱捕能量收获
Rainbow reflection and trapping for energy harvesting
论文作者
论文摘要
在两个相关的波控制机制之间进行了重要区别，这些机制可在空间分离频率分量上。这些所谓的彩虹机制要么缓慢或反向引导的波浪沿分级线阵列传播。我们证明了一个重要的细微差别，将彩虹反射与真正的彩虹陷阱区分开，并展示了这种区别对能量收集设计的影响。这些相关机制之间的差异是使用设计方法来突出显示的，该方法将其应用于质量负载的薄kirchhoff-love弹性板上的弯曲波，并通过模拟在弹性中的能量收集，通过弹性线的弹性元素的弹性阵列的弹性式阵列的弹性式阵列的弹性式弹簧杆的弹性元素的弹性。对这两种效果的描述，即反射和捕获，使我们能够表征强制线数组系统的行为，并预测其捕获，转换和聚焦能量的能力。
Important distinctions are made between two related wave control mechanisms that act to spatially separate frequency components; these so-called rainbow mechanisms either slow or reverse guided waves propagating along a graded line array. We demonstrate an important nuance distinguishing rainbow reflection from genuine rainbow trapping and show the implications of this distinction for energy harvesting designs. The difference between these related mechanisms is highlighted using a design methodology, applied to flexural waves on mass loaded thin Kirchhoff-Love elastic plates, and emphasised through simulations for energy harvesting in the setting of elasticity, by elastic metasurfaces of graded line arrays of resonant rods atop a beam. The delineation of these two effects, reflection and trapping, allows us to characterise the behaviour of forced line array systems and predict their capabilities for trapping, conversion and focusing of energy.
