Affiliation of Author(s):航空学院
Journal:Zhendong Gongcheng Xuebao
Abstract:The longitudinal vibration band gap property of locally resonant (LR) shaft with double resonators is studied using the transfer matrix method. The band structure of the LR shaft is calculated. It is found that a LR shaft with double resonators can have a broader band gaps than that with single resonator. Furthermore, the effect of the spacing ration on the band gaps is studied. It is shown that the spacing ratio can have an influence on the width of band gap and the width of band gap turns to the maximum only as or θ=0.5 or θ=1(θ=0). Furthermore, for some LR shafts, a phenomenon of band gap mergence can be observed as the spacing ratio is properly set, giving rise to a super-wide gap. In addition, it is found that Bragg scattering gap edge frequencies of LR shaft with double arrays of resonators may not only depend on the lattice constant, but also the spacing ration. © 2017, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
ISSN No.:1004-4523
Translation or Not:no
Date of Publication:2017-08-01
Co-author:赵帅,姚冰
Correspondence Author:cq
Date of Publication:2017-08-01