Band gap control of phononic beam with negative capacitance piezoelectric shunt
Chen Sheng-Bing(陈圣兵)†,Wen Ji-Hong(温激鸿),Yu Dian-Long(郁殿龙), Wang Gang(王刚),and Wen Xi-Sen(温熙森)
a Institute of Mechatronical Engineering, National University of Defense Technology, Changsha 410073, China; b Key Laboratory of Photonic and Phononic Crystal of Ministry of Education, National University of Defense Technology, Changsha 410073, China
Abstract Periodic arrays of negative capacitance shunted piezoelectric patches are employed to control the band gaps of phononic beams. The location and the extent of induced band gap depend on the mismatch in impedance generated by each patch. The total impedance mismatch is determined by the added mass and stiffness of each patch as well as the shunting electrical impedance. Therefore, the band gap of the shunted phononic beam can be actively tuned by appropriately selecting the value of negative capacitance. The control of the band gap of phononic beam with negative capacitive shunt is demonstrated numerically by employing transfer matrix method. The result reveals that using negative capacitive shunt to tune the band gap is effective.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 50875255 and 10902123).
Cite this article:
Chen Sheng-Bing(陈圣兵), Wen Ji-Hong(温激鸿), Yu Dian-Long(郁殿龙), Wang Gang(王刚), and Wen Xi-Sen(温熙森) Band gap control of phononic beam with negative capacitance piezoelectric shunt 2011 Chin. Phys. B 20 014301
[1]
Forward R L 1979 J. Appl. Opt. 18 690
[2]
Hagood N and Von Flotow A 1991 J. Sound Vib. 146 243
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.