We experimentally demonstrate an avoided crossing by coupling two harmonic oscillators.
Each harmonic oscillator consists of a mass connected to a stationary wall by a spring. The …

In this paper, we use the transfer matrix method to determine the band structure and
electrical transmission rate of a one-dimensional electronic comb-like waveguide system …

In this work, the Poincaré map numerical method was successfully developed to solve the
fourth-order differential equation that describes the flexural vibrations of a beam, within the …

We experimentally demonstrate an avoided crossing in an acoustic system, consisting of two
coupled PVC tube sections. One section has a fixed length, while the other has a variable …

We report the experimental measurement of the exchange of torsional normal-mode shapes
around an avoided crossing of levels in an elastic system consisting of two dissimilar …

An experimental and theoretical study of the spectral response of coupled viscoelastic bars
subject to axial oscillations is performed. Novel closed formulas for the envelope function …

The doorway-state phenomenon has been observed in many quantum and classical
undulatory systems when two oscillating systems are coupled, one that has a high level …

In a previous work an elastic bar with a groove or notch that presents a doorway state was
studied when the system was excited with 20 cycles of harmonic signals. The strength …

The paper is dedicated to the problem of shear vibration of compound resonator, made from
two different elastic materials, with rectangular cross section, when one side of the resonator …

A closed cylindrical pipe with an inner partition wall forms two one-dimensional cavities.
These each exhibit acoustic modes at certain well-defined frequencies. A partial …