人工晶体学报2025，Vol.54Issue(5)：832-840,9.DOI:10.16553/j.cnki.issn1000-985x.2024.0313
弯曲弹性梁多稳态超材料带隙调控特性研究
Bandgap Regulation Characteristics of Multi-Stable Metamaterial with Flexural Elastic Beams Structure
摘要
Abstract
Multi-stable metamaterial can deform under external forces,enabling flexible manipulation of elastic wave propagation.This paper proposed two multi-stable metamaterials based on the bistable flexural elastic beam structure,with different bending dimensions.These metamaterials possess two stable configurations and can switch between these states under the external forces.The dispersion relation and frequency response characteristics of the multi-stable metamaterial in the two stable configurations were investigated by the finite element method.The results reveal that by adjusting the external applied forces,the stable structure can be deformed,effectively tuning the frequency range and bandwidth of the bandgap.A wider first bandgap range can be obtained by expanding one-dimensional multi-stable metamaterial into three-dimensional multi-stable metamaterial.This shape-changing mechanism not only provides diverse control methods for elastic wave propagation but also offers new insights into the design and application of elastic waveguide switch.关键词
多稳态超材料/带隙/弯曲弹性梁/有限元/减振/弹性波导开关Key words
multi-stable metamaterial/bandgap/bending elastic beam/finite element/vibration reduction/elastic waveguide switch分类
数理科学引用本文复制引用
魏玉华,陈新华,蒋帅,李小双,王建广..弯曲弹性梁多稳态超材料带隙调控特性研究[J].人工晶体学报,2025,54(5):832-840,9.基金项目
国家自然科学基金(12472004,12102031) （12472004,12102031）
北京市自然科学基金面上项目(8202015) （8202015）
