大展弦比机翼振动特性的工程算法平台研究  

Research on Engineering Algorithm Platform for Vibration Characteristic of Wing with High Aspect Ratio

作　　者：杨翰雯 胡德英 何景武[3] YANG Hanwen;HU Deying;HE Jingwu(Beijing Institute of Mechanical&Electrical Engineering,Beijing 100074,China;China Academy of Aerospace Aerodynamics,Beijing 100074,China;School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]北京机电工程研究所,北京100074 [2]中国航天空气动力技术研究院,北京100074 [3]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《飞机设计》2020年第6期6-9,17,共5页Aircraft Design

摘　　要：建立了计算大展弦比直机翼的工程算法平台,相比于传统有限元算法计算效率高,适合用于需要快速迭代计算的初步设计阶段。该算法基于薄壁力学和工程梁理论,结合工程实际情况建立机翼结构的等效梁模型,计算机翼的质量刚度特性。根据机翼的分布质量、扭转、弯曲刚度分布,建立大展弦比直机翼模型的质量及刚度矩阵,完成了大展弦比机翼三维模型的离散化、参数化过程。利用基于工程振动学理论和经典颤振理论编写的Matlab程序计算机翼的固有动力特性及颤振特性。将平台结果与经典算例进行比较,误差在可接受范围内,证明了该算法的可行性。In the paper,an engineering algorithm platform is established to calculate the straight wing with large aspect ratio,which is more efficent then traditional finite element method and suitable for the preliminary design stage which needs fast iterative calculation.The process of discretizing and parameterizing the three-dimensional model of high aspect ratio wing is described in two steps.The first step is to simplify the model according to the thin-wall mechanics and engineering beam theory.Then the stiffness matrix and mass matrix is established by calculating the distribution of the wing’s stiffness and mass.After putting the matrixes into the calculating method based on matrix iteration,the natural frequencies and modes of the wing are given out.Comparison of the results with the FEM and the experiment data is made and it is revealed that the deviation is acceptable,which proves this method’s feasibility.

关 键 词：大展弦比机翼 参数化 颤振 工程算法 

分 类 号：V224[航空宇航科学与技术—飞行器设计]