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On the Nonlinear Dynamics Approach of Modeling the Bifurcation for Transonic Limit Cycle Flutter
| Content Provider | Semantic Scholar |
|---|---|
| Author | Matsushita, Hiroshi Miyata, Takafumi Christiansen, Lasse Engbo Lehn-Schiøler, Tue Mosekilde, Erik |
| Copyright Year | 2002 |
| Abstract | This paper reports the improvement of the twodegrees-of-freedom, finite dimensional, nonlinear math model, which has been proposed and developed by the authors to explain every feature of the transonic flutter data of the wind tunnel tests conducted at National Aerospace Laboratory in Japan for a high aspect ratio wing. It enables to explain the nonlinear features of the transonic flutter such as the subcritical Hopf bifurcation of a limit cycle oscillation (LCO), a saddle-node bifurcation, and an unstable limit cycle. By making use of the continuation method for analyzing the bifurcation nature of the math model, quantitative matching is obtained for the LCO amplitude between the math model and the test results. The wing deflections which are defining the bifurcation and were previously obtained by numerical integration of the acceleration data are now confirmed by the direct measurement of the deflection using newly developed laser deflection measuring device. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.icas.org/ICAS_ARCHIVE/ICAS2002/PAPERS/414.PDF |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
