摘要
基于声子晶体局域共振原理,设计了周期附加局域振子的蜂窝夹层板结构,利用双协调自由界面模态综合法,计算周期局域共振蜂窝夹层板弯曲振动的频响特性,并给出蜂窝夹层板的振型图。分析局域振子刚度、质量等参数对振动带隙的影响特性,得出带隙变化的定性规律。研究表明在振动带隙频率范围内,弯曲振动在此蜂窝夹层板能得到有效的抑制,该研究有望为复杂板壳振动控制提供一条新的技术途径。
Based on local resonance principle of phononic crystals, a honeycomb sandwich plate with vibration absorbers attached periodically was designed. Utilizing the modal synthetic technology, the frequency response function （FRF） of the periodic honeycomb sandwich plate （PHSP） was calculated and its modal shapes were presented. The effects of vibration absorber parameters, such as, stiffness, and mass on the vibration band gap were analyzed, and the qualitative changing law of the vibrational band gaps was obtained. Finally, the vibration response of the PHSP with pinned supports in time domain was compated. Results showed that the propagation of flexural vibration in the PHSP can be effectively attenuated. The study results provided a new way for vibration control of plates and shells.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第24期108-111,160,共5页
Journal of Vibration and Shock
关键词
周期局域共振
蜂窝夹层板
模态综合法
弯曲振动
频响特性
periodic locally resonant vibration
honeycomb sandwich plate
modal synthetic technology
flexuralvibration
frequency response
