提出了一维准周期结构的声子晶体模型.对弹性波通过该一维准周期结构声子晶体的透射系数进行了数值计算,并与周期结构的透射系数进行了比较.计算结果表明,弹性波通过一维准周期结构声子晶体时,同样会有带隙的出现,且带隙所在频率范围与周期结构的情形完全一样,不同的是在准周期结构声子晶体中,带隙内有很强的局域共振模.对此局域模性质的研究有助于声波或弹性波滤波器的制作. A one-dimensional quasi-periodic phononic crystal model is proposed. The transmission coefficient of the elastic wave through the one-dimensional quasi-periodic phononic crystal is numerically calculated and compared with that of the periodic structure. The calculated results show that the elastic When a wave passes through a one-dimensional quasi-periodic phononic crystal, the same band gap appears, and the frequency range of the band gap is exactly the same as that of the periodic structure. The difference is that in the quasi-periodic phononic crystal, the band gap has Strong local resonance mode, and the study of local mode properties contributes to the fabrication of acoustic or elastic wave filters.