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中文摘要：
利用传输矩阵法研究了镜像异质三周期一维声子晶体的振动带隙的特性，通过理论分析得出波矢与频率的色散关系表达式，根据本文设计的隔振器的材料属性与结构特征，Matlab仿真得出声子晶体隔振材料的禁带频率范围为19．8-2355Hz、2979—11775Hz、12525--23550Hz，冲击的频率范围是20Hz-2kHz，在禁带频率范围内．利用ANSYS软件对弹载传感系统进行瞬态冲击分析，验证声子晶体的抗冲击效果，获得系统的最大应力为0．035MPa，最大位移为0．12×10^-4mm．仿真结果验证了声子晶体型传感隔振系统在冲击方面的可靠性．
英文摘要：
Using the transfer-matrix method to research the vibration bandgap of one dimensional mirror image triply-periodical phononic crystal heterogeneous. The expression of the dispersion relation of the wave vector and frequency is obtained by theoretical analysis. According to the material properties and structural characteristics of the vibration isolator designed in this paper, the band gap frequency range of phononic crystal isolation material is 19.8-2355Hz, 2979-11775Hz, 12525-23550Hz simulated by Matlab. the impact of the frequency range is20Hz-- 2kHz, and in the range of band gap frequency. Transient impact analysis of missile guidance system were processed to applying Ansys software, verified the impact resistance of the phononic Crystal and obtained the maximum stress is 0. 035MPa and maximum displacement is 0. 12×10^-4 mm. The simulation results show the reliability of the phononic crystal on vibration isolation system of sensor in terms of impact.
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