欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
基于超声浸水透射技术,实验研究了有限尺寸二维正方晶格钢/水声子晶体多点缺陷模态性质.利用COMSOL Multiphysics软件建立该声子晶体有限元计算方法,求解了9×9超胞多点缺陷声子晶体能带结构,把缺陷局域模态频率与数值仿真和实验结果进行对比,结果表明：实验数据和理论值能够很好符合.进一步分析发现,点缺陷数量影响声波局域效应、本征模态和传播特性,为设计有限尺寸声波器件提供理论依据.
英文摘要：
The characteristics of multi-point defect phononic crystal （PC） composed of square array of circular steel cylinders in water are investigated experimentally using the ultrasonic immersion transmission technique. The band structures of the PCs are obtained by the finite element method with 9 × 9 supercell approximation. A very good agreement with the experimental results, numerical transmission data and eigenmode frequencies of band structures is observe. Meanwhile the number of multi-point defects affects the localized modes of cavities and propagation characteristics, and the eigenmodes of defects show the symmetric or antisymmetric modes in designing the new type of acoustic wave devices.
同期刊论文项目
同项目期刊论文
Study on band structures of elastic wave propagating in piezoelectric/piezomagnetic layered periodic
Breaking bands degeneracy in two-dimensional hybrid triangular lattice phononic crystal: A theoretic
Wave localization in randomly disordered layered three-component phononic crystals with thermal effe
Finite element analysis and design of band structures for two-dimensional phononic crystals microcav
A postprocessing method based on chirp Z transform for FDTD calculation of point defect states in tw
Analysis of wave propagation and localization in periodic/disordered layered composite structures by
Study on localization of plane elastic waves in disordered periodic 2-2 piezoelectric composite stru
Calculation of band structures for surface waves in two-dimensional phononic crystals with a wavelet
Elastic wave localization in two-dimensional phononic crystals with one-dimensional quasi-periodicit
Propagation of Rayleigh-type surface waves in a transversely isotropic piezoelectric layer on a piez
Reflection and refraction of plane waves at the interface between piezoelectric and piezomagnetic me
Frequency-dependent localization length of SH-wave in randomly disordered piezoelectric phononic cry
期刊信息
位置：