Flexural Wave Localization in Randomly Disordered Periodic Beams with Axial Load
Flexural Wave Localization in Randomly Disordered Periodic Beams with Axial Load
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DOI：
10.4028/www.scientific.net/kem.462-463.837
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发表时间：
2011-01
期刊：
影响因子：
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通讯作者：
Yi Wang;F. Li;K. Kishimoto
中科院分区：
文献类型：
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作者：
Yi Wang;F. Li;K. Kishimoto
本文研究了轴向载荷作用下随机无序二元周期梁中弯曲波的传播和局部化问题。基于连续性条件，推导了本构单元之间的传递矩阵。给出了无序周期系统局域化长度的表达式。通过数值计算，说明了弯曲波的局部化特性。讨论了轴向载荷对带隙结构和局域化特性的影响。结果表明，理想系统的通带和阻带特性可以通过轴向载荷进行调谐。此外，弯曲波的局域化特性将被更高的无序度所加强。
In this paper, the flexural wave propagation and localization in randomly disordered binary periodic beams with the axial load are studied. Based on the continuity conditions, the transfer matrix between the constitutive unit cells is derived. The expression of the localization length in the disordered periodic system is presented. Numerical calculations are performed to illustrate the localization characteristics of the flexural wave. The effects of the axial load on the band gap structures and the localization properties are discussed. From the results, we can observe that the properties of the pass band and stop band for the perfect system can be tuned by the axial load. Moreover, the localization properties of the flexural wave will be strengthened by the higher disordered degree.