摘要
无限周期弹簧振子结构具有和声子晶体类似的振动 (弹性波 )带隙特性 ,即带隙频率范围内的振动 (弹性波 )无法在该结构中进行传播。本文首先计算了无限周期弹簧振子结构振动 (弹性波 )带隙 ,进而采用数值方法对有限周期弹簧振子结构的振动传输特性进行了仿真计算 ,最后对双质量周期振子结构进行了试验验证。理论计算结果、仿真结果和试验测试结果相互吻合 。
By analyzing the vibration band structure of infinite periodic mass-spring structure, it is discovered that the structure have vibration band gaps which are similar with elastic band gaps of phononic crystals, and the vibration of such frequencies within band gaps can not be transmitted. Numerical calculation method is applied to calculate the frequency response of finite periodic structure, and the two results match well. These conclusions are well validated by the vibration experiment of two mass periodic mass-spring structure.
出处
《机械科学与技术》
CSCD
北大核心
2004年第11期1338-1340,1343,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
973国家重大基础研究项目 (5 13 0 7)资助
关键词
声子晶体
弹性波带隙
弹簧振子
振动带隙
Phononic crystals
Elastic band gap
Mass-spring
Structure
Vibration band gap
