BAND GAP COMPUTATION FOR MIXED SOLID-FLUID PHONONIC CRYSTALS OF TRIANGULAR LATTICE BY DIRICHLET-TO-NEUMANN MAPS

摘要：

A numerical method based on Dirichlte-to-Neumann (DtN) map for calculating the band gaps of twodimensional (2D) phononic crystals with mixed solid and fluid components is presented.It is applied to a triangular lattice of circular solid cylinders in a fluid matrix,for which the conventional plane wave expansion method may fail due to different wave modes in the solid and fluid.The DtN map is constructed by using the cylindrical function expansions.Linear eigenvalue problems are formulated,from which the band structures can be determined.Two numerical examples are illustrated to shovv the efficiency of present method.

关键词： band gaps phononic crystals Dirichlet-to-Neumann map

作者: F.L.Li Y.S.Wang C.Zhang

作者单位: Institute of Engineering Mechanics,Beijing Jiaotong University,100044,China Department of Civil Engineering,University of Siegen,D-57076 Siegen,Germany

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 298-301

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）