Volume 114, Number 5, June 2016
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||28 June 2016|
Doorway states in flexural oscillations
1 Instituto de Investigación en Ciencias, Universidad Autónoma del Estado de Morelos Avenida Universidad 1001, 62209 Cuernavaca, Morelos, Mexico
2 Instituto de Física, Benemérita Universidad Autónoma de Puebla - P.O. Box J-48, 72570 Puebla, Pue., Mexico
3 Instituto de Física, Universidad Nacional Autónoma de México - P.O. Box 20-364, 01000 México, D. F., Mexico
4 Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México - P.O. Box 48-3, 62251 Cuernavaca, Mor., Mexico
Received: 29 March 2016
Accepted: 10 June 2016
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 density and the other one a very low density. Up to now the systems analysed have in common that they are governed by second-order differential equations. In the present work it is shown that the doorway state mechanism also appears when dealing with flexural vibrations of elastic systems, which are governed by fourth-order differential equations. It should be mentioned that this phenomenon also emerges from the two coupled second-order differential Navier equations.
PACS: 43.20.Fn – Scattering of acoustic waves / 24.30.Cz – Giant resonances / 43.40.At – Experimental and theoretical studies of vibrating systems
© EPLA, 2016
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