User login

Navigation

You are here

Curvature Matters!

Osama R. Bilal's picture

In this recent EML paper, we show the stark effect of curvature on the performance of metamaterials, both in the static and dynamic domains. Read more at: https://doi.org/10.1016/j.eml.2024.102285

Curvature Matters! 

Abstract: Metamaterials can enable unique mechanical properties based on their geometry rather than their chemical composition. Such properties can go beyond what is possible using conventional materials. Most of the existing literature consider metamaterials in Cartesian coordinates with zero curvature. However, realistic utilization of meta-structures is highly likely to involve a degree of curvature. In this paper, we study both the effective static and dynamic properties of metamaterials in the presence of curvature. To capture the effect of curvature on the static behavior of our metamaterial, we calculate the effective Poisson’s ratio of the metamaterial in the presence of curvature. We conduct our analysis on three-dimensional metamaterials with varying effective Poisson’s ratio. We observe a significant change in the values of the effective Poisson’s ratio of the metamaterial due to curvature. To capture the effect of curvature on the dynamics of our metamaterials, we calculate dispersion curves of curved metamaterial at different circumferential directions. We show both numerically and experimentally the change of the dynamic behavior of auxetic metamaterial from attenuation to transmission and vice-versa due to curvature. Our findings underscore the importance of curvature in both static and dynamic analysis of metamaterial design and could provide the means to guide practical implementations of metamaterials for functional use.

Subscribe to Comments for "Curvature Matters!"

Recent comments

More comments

Syndicate

Subscribe to Syndicate