Nonlinear analysis of a 2-DOF piecewise linear aeroelastic system
Nonlinear analysis of a 2-DOF piecewise linear aeroelastic system
复制标题
DOI：
10.1115/detc2012-70038
复制
发表时间：
2012-08
影响因子：
5.6
通讯作者：
T. Kalmár-Nagy;R. Csikja;T. Elgohary
中科院分区：
文献类型：
--
作者：
T. Kalmár-Nagy;R. Csikja;T. Elgohary
本文研究了一个两自由度（俯仰和纵倾）气动弹性系统的动力学，其中气动力被建模为有效迎角的分段线性函数。分析了平衡点的稳定性和分岔。我们发现边界碰撞和快速分叉。利用MATCONT和Mathematica计算了系统的分岔图。在两个非平凡平衡点附近，还观察到了间歇切换的混沌行为。
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.