Nonlinear analysis of a 2-DOF piecewise linear aeroelastic system

作者：Kalmar Nagy Tamas; Csikja Rudolf^*; Elgohary Tarek A

来源：Nonlinear Dynamics, 2016, 85(2): 739-750.

DOI：10.1007/s11071-016-2719-z

• Aeroelasticity
• Piecewise linear system
• Limit cycle oscillation
• Bifurcation
• Hybrid system
• Chaos

We study the dynamics of a two- degree-of-freedom (pitch and plunge) aeroelastic system where the aerodynamic forces are modeled as a piecewise linear function of the effective angle of attack. Stability and bifurcations of equilibria are analyzed. We find border collision and rapid bifurcations. Bifurcation diagrams of the system were calculated utilizing MATCONT and Mathematica. Chaotic behavior with intermittent switches about the two nontrivial equilibria was also observed.

• 出版日期2016-7