The methodology to realize the tunable one-way transmission of Lamb waves is proposed by using giant magnetostrictive materials. The elasticity of Terfenol-D is sensitive to the external magnetic fields, based on which the one-way transmission anti-symmetric and symmetric Lamb waves is achieved via non-symmetric magnetic field distributions imposed on Terfenol-D, and exemplified by numerical simulations in the frequency domain. Finally, the frequency tunability under magnetic fields is revealed quantitatively. The design scheme proposed is easily fabricated and artificially controllable, which opens a new prospect for the wave rectification and engineering applications.

中文翻译：

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利用巨磁致伸缩材料实现兰姆波的单向可调传输

提出了一种利用巨磁致伸缩材料实现兰姆波可调单向传输的方法。Terfenol-D 的弹性对外部磁场敏感，在此基础上，通过施加在 Terfenol-D 上的非对称磁场分布实现单向传输反对称和对称 Lamb 波，并通过数值模拟在频域。最后，定量揭示了磁场下的频率可调性。所提出的设计方案制作简单，人工可控，为波浪整流和工程应用开辟了新的前景。