Effect of sweep angle on bifurcation analysis of a wing containing cubic nonlinearity

Saied Irani, Mohammadreza Amoozgar, Hamid Sarrafzadeh

Research output: Contribution to journalArticle


Limit cycle oscillations (LCO) as well as nonlinear aeroelastic analysis of a swept aircraft wing with cubic restoring moments in the pitch degree of freedom is investigated. The unsteady aerodynamic loading applied on the wing is modeled by using the strip theory. The harmonic balance method is used to calculate the LCO frequency and amplitude for the swept wing. Finally the super and subcritical Hopf bifurcation diagrams are plotted. It is concluded that the type of bifurcation and turning point location is sensitive to the system parameters such as wing geometry and sweep angle.

Original languageEnglish
Pages (from-to)447-470
Number of pages24
JournalAdvances in Aircraft and Spacecraft Science
Issue number4
Publication statusPublished - 25 Oct 2016
Externally publishedYes


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