This paper describes a method of analysing aeroelastic systems with complex piecewise non-linear structural stiffness in the transonic regime. The technique employed in this paper utilises novel logarithmic and tanh functions to both represent discrete non-linearities and to act as a switch between different non-linear areas. The aerodynamic model used is generated using an eigenvalue realisation algorithm (ERA) which produces a reduced order model (ROM) from linearised Euler simulations. It is shown that techniques are ideally suited to use with continuation methods. Flutter boundaries and limit-cycle oscillations can then be rapidly identified with good accuracy.
|Title of host publication||35th AIAA Fluid Dynamics Conference and Exhibit|
|Publication status||Published - 1 Dec 2005|
|Event||35th AIAA Fluid Dynamics Conference and Exhibit - Toronto, ON, United Kingdom|
Duration: 6 Jun 2005 → 9 Jun 2005
|Conference||35th AIAA Fluid Dynamics Conference and Exhibit|
|Period||6/06/05 → 9/06/05|