Optimization of a ring-like phononic crystal structure with bonding layers for band gap

作者：Ma, Xingfu; Li, Zhinong^*; Xiang, Jiawei; Wang, Chengjun

来源：MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2022, 173: 109059.

DOI：10.1016/j.ymssp.2022.109059

• Phononic crystal
• Ring-like structure
• Bonding layers
• Physical experiment
• Response surface method

In this paper, the band gap (BG) properties of the phononic crystal (PC) involving bonding layers described by the ring-like structure are investigated. Based on the generalized Maxwell model, the effect of the bonding layers on BGs dependence is analyzed. Combing the numerical simulation and physical experiment, BG characteristic of the ring-like PC structure involving bonding layers is proved to be more suitable for the practical application. The effects of several parameters such as the thickness of bonding layers, the height of cuboid scatterer, the height of the elastic beams, and the width of the elastic beams onto BGs are analyzed by numerical simulation, and the last three parameters are demonstrated to be the critical factors for BGs. Based on the response surface method (RSM), three factors and seven levels experiments are designed to determine the relationships between the three key factors and BGs. The optimal BGs of the proposed PC structure involving bonding layers can be opened from 60 Hz to 300 Hz. It is established that the research results can provide possibilities to boost the development and design of PCs involving bonding layers.

• 单位
  南昌航空大学