Abstract
The transonic flutter analysis of swept wings containing structural non-linearities is considered. Concentrated preload non-linearities are treated using asymptotic expansions which take into account the influence of the higher harmonics of the load-displacement expansion series. The generalized aerodynamic load matrix is obtained using pulse transfer function analysis. Transonic aerodynamic flows are modeled using the transonic small-disturbance equation which is solved by applying an approximate factorization finite-difference algorithm. The frequency domain solution of the aeroelastic equation is obtained through root-locus analysis. The effects of the magnitudes of the preload non-linearities on the flutter stability boundary of the system are studied.
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