Abstract：For a large number of disk structures used in industrial equipment, they are often taken as carriers or propagators of low-frequency vibration. Here, based on the local resonance theory, a radical phononic crystal structure with unilateral periodic ring resonance was designed and studied to effectively suppress vibration of disk structures. By calculating its structure energy band diagram, a low frequency band gap with an initial frequency of less than 0.016 and a width of 0.064 was obtained. Furthermore, the intrinsic displacement field of special points in the energy band diagram was analyzed to explore the formation mechanism of band gap. At the same time, the frequency occurrence function curve of finite period was calculated to verify the correctness of the structure energy band diagram. Finally, the influence mechanism of structural parameters on band gap was studied and discussed.
吕锐翔，李丽霞，杨继博. 单边周期环形谐振径向声子晶体结构[J]. 振动与冲击, 2021, 40(1): 68-72.
L Ruixiang, LI Lixia, YANG Jibo. Radial phononic crystal structure with unilateral periodic ring resonance. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(1): 68-72.
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