Research on geometric nonlinear static aeroelasticity of high-aspect-ratio composite wing

doi:10.19936/j.cnki.2096-8000.20230428.012

Abstract

Abstract: Aeroelastic research has extremely important significance on the stability of the wing. At present, the large size high-aspect-ratio composite wing under the action of aerodynamic force, can produce large bending torsional deformation, making the geometric nonlinear static aeroelasticity problem become more prominent, greatly reducing the stability of this type of plane and seriously affecting the flight safety. Based on the bi-directional coupling method of CFD/CSD, the aerodynamic load under large deformation was solved by N-S governing equation and the balance equation of nonlinear structure was solved by Newton-Raphson iterative method. The large deformation geometric nonlinear static aeroelastic problem of composite wings with large aspect ratio was numerically analyzed. Through the simulation analysis, the structural variation law of the angle of attack and Mach number on the geometric nonlinear static aeroelastic deformation of the high-aspect ratio composite wing is obtained, and the influence degree of the aeroelastic deformation on the longitudinal aerodynamic characteristics of the wing is analyzed.

Key words: high-aspect-ratio composite wing, large deformation, geometric nonlinear static aeroelasticity, CFD/CSD bi-directional coupling, longitudinal aerodynamic properties, composites

CLC Number:

TB332

ZHANG Baosheng, WANG Junli, LIU Zhiyuan, LI Jinyang, FENG Yuru. Research on geometric nonlinear static aeroelasticity of high-aspect-ratio composite wing[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(4): 78-86.

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