1. Further understanding of doorway states in elastic systems.
- Author
-
Otero, J. A., Monsivais, G., Morales, A., Gutiérrez, L., Díaz-de-Anda, A., and Flores, J.
- Subjects
ELASTICITY ,LORENTZIAN function ,MECHANICS (Physics) ,AUDIO frequency ,ACOUSTIC excitation ,CHARTS, diagrams, etc. - Abstract
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 function had a Lorentzian width Γ
d = 1/πτd , where τd is the decay time of the prompt response. In the present paper, the doorway-state phenomenon is analyzed again for the same harmonic signals but for a very large number of cycles. The strength-function phenomenon is once more obtained, but now with a Lorentzian width Γ' which is larger than Γd . A qualitative and numerical explanation of this fact is given, leading therefore to further understanding of doorway states in elastic systems. The numerical results show a very good agreement with the values measured in the laboratory. [ABSTRACT FROM AUTHOR]- Published
- 2017
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