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在方案设计阶段,为了使机翼结构既满足强度设计要求,又满足刚度设计要求,本文提出了一种基于数学规划法的层次优化方法。首先利用准则法进行结构的满应力设计优化,在此基础上利用数学规划法进行结构的刚度设计(以颤振约束进行优化并进行舵面效率的校核)。文中以某型飞机机翼为例,在多墙、梁式两套方案的结构优化设计上进行了成功应用。
In the stage of scheme design, in order to make the wing structure not only meet the design requirements of strength but also meet the design requirements of stiffness, a hierarchical optimization method based on mathematical programming is proposed in this paper. First of all, using the criterion method to optimize the design of the full stress of the structure, based on this, the stiffness of the structure is designed by the mathematical programming method (flutter constraint optimization and rudder surface efficiency check). In this paper, a certain type of aircraft wing, for example, has been successfully applied in structural optimization design of multi-wall and beam-type schemes.