Enhancements of energy and Q-factor of a nonlinear resonator with increase in its losses
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Oleg Rudenko, A.L. Sobisevich, L.E. Sobisevich, Claes Hedberg |
| Title: | Enhancements of energy and Q-factor of a nonlinear resonator with increase in its losses |
| Translated title: | Förstärkning av energi och Q-faktor hos en ickelinjär resonator genom ökning av dess förluster |
| Journal: | Doklady Physics / Doklady Akademii Nauk |
| Year: | 2002 |
| Volume: | 383 |
| Issue: | 1 |
| Pagination: | 330-333 |
| ISSN: | 0869-5652 |
| Publisher: | MAIK Nauka/Interperiodica Publishing, Russia |
| Organization: | Blekinge Institute of Technology |
| Department: | Dept. of Mechanical Engineering (Institutionen för maskinteknik) Dept. of Mechanical Engineering S-371 79 Karlskrona +46 455 38 50 00 http://www.ima.bth.se/ |
| Authors e-mail: | claes.hedberg@bth.se |
| Language: | English |
| Abstract: | A phenomenon that is paradoxical at first sight is studied: an appropriately-organized energy outflow from a resonator cavity results not in the attenuation of nonlinear vibrations but in their noticeable enhancement. An increase in the resonator Q-factor and in the energy accumulated in it is well pronounced when the frequencies of the higher harmonics generated in a nonlinear medium are close to the natural frequencies of the resonator. An important example of a nonlinear system with the necessary properties is an acoustic resonator with selective losses. |
| Summary in Swedish: | Det paradoxala beteendet att en resonators enegriinnehåll och Q-faktor kan öka när dess dämpning ökar beskrivs. |
| Subject: | Mechanical Engineering\Structural Dynamics Mechanical Engineering\General |
| Keywords: | nonlinear acoustics, resonator, Q-factor increase, acoustic resonance |
