摘要
声子晶体是由不同材料组成的周期性结构.其显著特点是弹性波在传播时,受其内部结构的作用,在一定频率范围(带隙)内会抑制弹性波的传播,而在其他频率范围(通带)可以无损耗地传播.本文提出并设计一种新型的陀螺-质量声子晶体结构,研究并且分析了不同参数对于陀螺-质量声子晶体结构振动通带的影响,并通过有限次结构数值计算进行验证.
The phononic crystals are periodic structures consisting of two or more material phases.When the elastic wave is propagating along the phononic crystals,the obvious feature is that the elastic wave is suppressed due to Bragg scattering in the band gap,but can be transmitted without loss in the pass band.In this paper,a new type of gyro-mass phononic crystal structure was proposed and designed.In addition,the effects of different structural parameters on the pass band of the gyro-mass phononic crystal were studied,which are verified by numerical simulations based on the structure with finite unit cells.
作者
邸士杰
杨晓东
张伟
Di Shijie;Yang Xiaodong;Zhang Wei(College of Mechanical Engineering,Beijing University of Technology,Beijing100124,China;Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures,Beijing University of Technology,Beijing100124,China)
出处
《动力学与控制学报》
2019年第3期288-292,共5页
Journal of Dynamics and Control
基金
国家自然科学基金面上项目(11672007)~~
关键词
声子晶体
陀螺结构
参数影响
phonon crystals
gyroscope structure
parameter influence
