航空科学技术2025，Vol.36Issue(3)：70-77,8.DOI:10.19452/j.issn1007-5453.2025.03.009
一种大展弦比机翼几何非线性颤振分析方法
An Analysis Method of Geometric Nonlinear Flutter for High-aspect-ratio Wings
摘要
Abstract
Due to the large scale and small relative stiffness of the large-aspect-ratio aircraft,the deformation of the airfoil under load condition is large and complicated with different flight attitudes,which leads to unstable change of the dynamic characteristics and aerodynamic load distribution of the aircraft structure,and makes the flutter problem especially prominent.In this paper,a set of aeroelastic design and analysis technique for large aspect ratio wing is developed by combining geometric nonlinear structural finite element modeling with nonlinear aerodynamic calculation.Taking the model of a sub-scale flexible wing as an example,geometrical nonlinear aeroelastic calculation and analysis are carried out,and the results are compared with the experimental results.The results show that the finite element modeling method of geometrical nonlinear structures proposed is reasonable.The proposed nonlinear flutter analysis method can effectively analyze the geometrical nonlinear aeroelastic characteristics of large deformed structures,and the calculation accuracy meets the requirements of engineering development.关键词
几何非线性/大展弦比/气动弹性/风洞试验/非线性气动力Key words
geometrical nonlinear/high-aspect-ratio/aeroelastic/wind tunnel test/nonlinear aerodynamic引用本文复制引用
胡志勇,高怡宁,赵晓倩..一种大展弦比机翼几何非线性颤振分析方法[J].航空科学技术,2025,36(3):70-77,8.基金项目
航空科学基金(2018ZA03003) Aeronautical Science Foundation of China(20182A03003) （2018ZA03003）
