公开(公告)号：US20130033339A1

公开(公告)日：2013-02-07

申请号：US13552042

申请日：2012-07-18

申请人： Nicholas BOECHLER ,  Georgios THEOCHARIS ,  Chiara DARAIO

发明人： Nicholas BOECHLER ,  Georgios THEOCHARIS ,  Chiara DARAIO

IPC分类号： H03H9/54

CPC分类号： G10K11/04

摘要： A tunable frequency acoustic rectifier that is a granular crystal composed of a statically compressed one-dimensional array of particles in contact, containing a light mass defect near a boundary. The tunable frequency acoustic rectifier is nonlinear and contains tunable pass and stop bands in their dispersion relation. Vibrations at selected frequencies applied to the granular crystal from the side near the defect will cause the system to bifurcate at a critical input amplitude and subsequently jump to quasiperiodic and chaotic states with broadband frequency content. Some of this frequency content lies within the pass bands and will propagate through the crystal. Vibrations at the same frequencies applied to the other side of the granular crystal will not bifurcate, and little energy is transmitted.

摘要翻译： 一种可调谐频率整流器，其是由静态压缩的一维接触颗粒阵列组成的粒状晶体，其包含边界附近的光质缺陷。 可调谐频率整流器是非线性的，并且在其色散关系中包含可调谐的通过和停止带。 在从缺陷附近一侧施加到颗粒状晶体的选定频率处的振动将导致系统在关键输入幅度处分叉，随后跳到具有宽带频率内容的准周期性和混沌状态。 这些频率内容中的一些位于通带内，并将通过晶体传播。 施加到粒状晶体的另一侧的相同频率的振动将不会分叉，并且传递很少的能量。