arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2212.07360physics.app-ph
收藏

可重构磁机械超材料的研究

An Investigation of Reconfigurable Magnetomechanical Metamaterials

R. Galea, P. -S. Farrugia, K. K. Dudek, L. Zammit Mangion, J. N. Grima, R. Gatt

摘要:

在这项工作中,一个手风琴状系统的嵌入磁性夹杂物进行了实验研究。它示出的方式,该结构变形时受到外部磁场依赖于嵌入的磁体的磁矩和臂的长度。手风琴状系统的堆叠导致形成六边形蜂窝,其可以具有负的、零的和正的泊松比。获得的结构变化取决于磁性夹杂物和所施加的磁场的相对位置。特别地,六边形蜂窝布置中的一个能够在外部磁场反转时在常规配置和凹入配置之间切换。对于所考虑的所有结构,尺寸可以通过外部磁场控制,从而允许高度的可转动性。此外,它们的行为可以实时改变。结果的实际意义是感兴趣的,因为它们表明,这些结构可以在许多应用中,如在设计的脚手架可展开的结构,致动器,可变孔筛,和隔音系统。

英文摘要:

In this work, an experimental investigation of an accordion-like system with embedded magnetic inclusion is carried out. It is shown that the way that this structure deforms when subjected to an external magnetic field depends on the magnetic moment of the embedded magnets and the length of the arms. Stacking of the accordion-like system leads to the formation of hexagonal honeycombs that can have a negative, zero, and positive Poisson's ratio. Variation in the configuration attained depends on the relative positioning of the magnetic inclusion and the applied magnetic field. In particular, one of the hexagonal honeycomb arrangements was able to switch between a conventional and a re-entrant configuration upon the reversal of the external magnetic field. For all structures considered, the dimensions can be controlled through the external magnetic field allowing for a high degree of turnability. Furthermore, their behaviour can be altered in real time. The practical implications of the results are of interest since they indicate that these structures can be adopted in numerous applications, such in the design of scaffoldings for deployable structures, actuators, variable pored sieves, and sound proofing systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑