非线性壁板颤振分析
收稿日期: 2014-07-10
修回日期: 2014-09-02
网络出版日期: 2014-09-17
基金资助
国家自然科学基金 (11202165); 航天科技创新基金; 航天支撑技术基金
Analysis of nonlinear panel flutter
Received date: 2014-07-10
Revised date: 2014-09-02
Online published: 2014-09-17
Supported by
National Natural Science Foundation of China (11202165); Astronautic Technology Innovation Foundation; Astronautic Support Technology Foundation
安效民 , 胥伟 , 徐敏 . 非线性壁板颤振分析[J]. 航空学报, 2015 , 36(4) : 1119 -1127 . DOI: 10.7527/S1000-6893.2014.0221
Nonlinear panel flutter caused by the interaction between nonlinear fluid and geometrically nonlinear structure is studied by an improved computational fluid dynamics and computatienal structural dynamics (CFD/CSD) coupled program. A flux splitting scheme combined with implicit time marching technology and geometric conservation law is utilized to solve unsteady aerodynamic pressure; the finite element corotational theory is applied to modeling the geometric nonlinear two-dimensional and three-dimensional panels, and an approximate energy conservation algorithm is developed to obtain nonlinear structure response. The two solvers are connected by a second-order loosely coupled method and applied to the solution of panel flutter problems for supersonic, transonic and subsonic Mach numbers. A representative limited cycle oscillation appears when geometric nonlinearity and aerodynamic nonlinearity are considered. The flutter boundary and amplitude of limit cycle oscillation are discussed.
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