Aerospace | |
Continuation Methods for Nonlinear Flutter | |
Edward E. Meyer1  | |
[1] Boreal Racing Shells, Seattle Rowing Center, 1116 West Ewing Street, Seattle, WA 98119, USA; | |
关键词: aeroelasticity; multiple nonlinearity flutter; continuation methods; describing functions; bifurcation; continuation optimization; controlling LCO amplitudes; | |
DOI : 10.3390/aerospace3040044 | |
来源: DOAJ |
【 摘 要 】
Continuation methods are presented that are capable of treating frequency domain flutter equations, including multiple nonlinearities represented by describing functions. A small problem demonstrates how a series of continuation processes can find all limit-cycle oscillations within a specified region with a reasonable degree of confidence. Curves of the limit-cycle amplitude variation with velocity, indicating regions of stability and instability with colors, give a compact view of the nonlinear behavior throughout the flight regime. A continuation technique for reducing limit-cycle amplitudes by adjusting various system parameters is presented. These processes are economical enough to be a routine part of aircraft design and certification.
【 授权许可】
Unknown