Application of aeroelastic modes on nonlinear supersonic panel flutter at elevated temperatures |
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| Affiliation: | 1. Division of Engineering, Mathematics and Science, Daniel Webster College, Nashua, NH 03063-1300, USA;2. Department of Aerospace Engineering, Old Dominion University, Norfolk, VA 23529-0247, USA;1. Universidade do Porto, DEMEGI, Faculdade de Engenharia, Rua Doutor Roberto Frias, 4200-465 Porto, Portugal;2. School of Engineering, Heriot-Watt University, Edinburgh EH14 4AS, UK;3. IDMEC - Instituto Superior Tećnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal |
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| Abstract: | This paper shows that the use of aeroelastic modes, instead of the traditional in vacuo natural modes, can reduce drastically the number of coupled nonlinear modal equations for the large amplitude nonlinear panel flutter analysis at an arbitrary yawed supersonic flow angle and elevated temperatures. All four types of panel behavior can be predicted and they are flat and stable, aerothermally buckled but dynamically stable, limit cycle oscillations, and chaos. |
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