HIGH-FREQUENCY ANALYSIS OF LONGITUDINAL WAVE BANDS IN TUNABLE ROD-TYPE PIEZOELECTRIC PHONONIC CRYSTALS

摘要：

The model of tunable rod-type piezoelectric phononic crystals is established by utilizing the longitudinal effects of the piezoelectric rods for electromechanical coupling.A modified transfer matrix method (MTMM) is presented on basis of the Mindlin-Herrmann rod theory for modeling longitudinal wave motions in structural members and the method of reverberation-ray matrix (MRRM) for deriving the member transfer relations.The joint transfer relations are derived from the continuous conditions of generalized displacements and forces in adjacent members of the joints.The global transfer relation of the unit cell is then derived by considering the member and joint transfer relations in succession,from which the dispersion relation is obtained by virtue of Floquet-Bloch theorem.Numerical examples are given to validate the proposed method and to show the variation of the longitudinal-wave bands with the electrical conditions on the electrodes.

关键词： Rod-type piezoelectric phononic crystals Modified transfer matrix method Mindlin-Herrmann rod theory Longitudinal-wave bands Tunability

作者: Yong-qiang GUO Long-fei LI

作者单位: Key Laboratory of Mechanics on Disaster and Environment in Western China, Ministry of Education, and School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, 730000, China

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 171-175

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）