全部

力学与实践 ›› 2019, Vol. 41 ›› Issue (6): 665-670.doi: 10.6052/1000-0879-19-227

• 应用研究 • 上一篇    下一篇

基于外部气动力和片条法的静气动弹性方法研究

刘晓晨1)   

  1. 上海飞机设计研究院,上海 201210
  • 收稿日期:2019-06-18 发布日期:2019-12-27
  • 通讯作者: 1)刘晓晨,工程师,主要研究方向为飞行载荷和气动弹性。 E-mail: 1203701947@qq.com

STATIC AEROELASTICITY METHOD BASED ON EXTERNAL AERODYNAMIC FORCE AND STRIP METHOD

LIU Xiaochen1)   

  1. Shanghai Aircraft Design and Research Institute, Shanghai 201210, China
  • Received:2019-06-18 Published:2019-12-27

摘要: 本文通过对载荷设计中的静气动弹性分析方法进行研究,发展了一种基于外部刚性气动力数据和改良片条理论修正的弹性载荷修正方法。其中结构变形通过工程梁方法提取部件刚度阵进行计算,气动力通过网格化模型基于外部试验或CFD气动力数据库插值得到。结构和气动之间位移和力的数据传递分别利用曲面样条和形函数面积坐标加权法插值,弹性载荷修正通过改良后的片条理论计算,由此迭代循环直至结构变形收敛。同时通过对相关工程实例进行分析计算并与成熟方法对比,验证了该方法的可行性和高效性。

关键词: 气动弹性, 结构变形, 弹性修正, 工程梁, 片条理论

Abstract: The static aeroelastic analysis method is applied in the load design in this paper, and an elastic load correction method based on the external rigid aerodynamic force and the modified strip method is developed. The deformation of the structure is calculated by the engineering beam method, the stiffness matrix of different components is obtained, and the aerodynamic force is obtained from the external test or the CFD aerodynamic database interpolation by meshing the model. The data transfer for the displacement and the force between the structure and the aerodynamics field is performed by using the surface spline function method and the shape function area coordinate weighting method, respectively, the elastic load is computed from the deflection of the aerodynamic mesh, that is, the improved strip. On this basis, the computation is iteratively looped until the displacement of the structural model converges. At the same time, the feasibility and the efficiency of the method are verified by analyzing some engineering examples and comparing with the well matured methods.

Key words: aeroelasticity, structural deformation, elastic correction, engineering beam, strip theory

中图分类号: 

  • V215.1