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本文利用COMSOL Multiphysics有限元模拟软件对声子晶体色散关系的求解进行了仿真研究。我们计算了一个由水柱按四方晶格排列于水银中形成的二维声子晶体的色散关系,并探讨了计算中网格的划分、边界条件的设定。研究结果对声子晶体本征特性研究具有一定指导意义。
In this paper, COMSOL Multiphysics finite element software was used to simulate the dispersion of phononic crystals. We calculate the dispersion relation of a two-dimensional phononic crystal formed by a water column arranged in mercury in a tetragonal lattice, and discuss the division of the grids in the calculation and the setting of the boundary conditions. The research results have certain guiding significance for the study of intrinsic characteristics of phononic crystals.