均匀固体和带隙超材料之间界面的松弛微形态模拟：超结构设计的新观点
Relaxed micromorphic modeling of the interface between a homogeneous solid and a band-gap metamaterial: new perspectives towards meta-structural design
摘要：
在本文中，各向同性松弛微观模型的材料参数推导出一个特定的超材料在以前的贡献被用来模拟其传输特性。具体而言，在一个均匀的固体和所选择的超材料之间的界面处的反射和透射系数进行了分析，通过使用这两个放松的微观模型和一个直接的有限元实现的详细的微观结构。所得到的结果表明，通过我们的丰富的连续介质模型和直接有限元模拟发出的透射谱之间的良好协议。这种极好的一致性验证了材料参数的间接测量，并为有效的元结构设计开辟了道路。
英文摘要：
In the present paper, the material parameters of the isotropic relaxed micromorphic model derived for a specific metamaterial in a previous contribution are used to model its transmission properties. Specifically, the reflection and transmission coefficients at an interface between a homogeneous solid and the chosen metamaterial are analyzed by using both the relaxed micromorphic model and a direct FEM implementation of the detailed microstructure. The obtained results show an excellent agreement between the transmission spectra derived via our enriched continuum model and those issued by the direct FEM simulation. Such excellent agreement validates the indirect measure of the material parameters and opens the way towards an efficient meta-structural design.
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