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机翼结构设计是飞机结构设计的重要环节之一,通常在气动外形确定之后进行。根据机翼气动外形,首先对元件进行二维布局设计,确定机翼结构形式及梁、肋、缘条、油箱等的位置,初步给出各构件尺寸大小,然后在ANSYS中应用APDL语言,建立合理的有限元模型,进行静力学计算分析,进一步使用子问题逼近算法对机翼结构进行强度和变形约束下的结构优化,得到重量最轻的结构设计。结果表明,使用APDL这种参数化的建模语言进行机翼结构优化是可行的,能有效提高结构优化和设计阶段的工作效率。
Wing structure design is an important part of the aircraft structure design, usually after the determination of the aerodynamic shape. According to the aerodynamic shape of the wing, the components are firstly designed in a two-dimensional layout, and the positions of the aerofoil structure, beams, ribs, flanges, fuel tanks and so on are determined. The size of each component is given preliminarily, and then APDL language is used in ANSYS to establish Reasonable finite element model for static calculation and analysis, and further use of sub-problem approximation algorithm to optimize the structure of the wing structure under the constraints of strength and deformation, the lightest weight of the structure design. The results show that it is feasible to use the APDL parametric modeling language to optimize the wing structure, which can effectively improve the structure optimization and design efficiency.