考虑结构动力学与颤振约束的颤振缩比模型优化设计

由于颤振缩比模型与原模型在承力结构上存在差异,当二者的结构动力学特性相似时,气动弹性可能并不等效.针对该问题,提出了同时考虑结构动力学约束和颇振约束的颤振缩比模型优化设计方法,建立了利用遗传/敏度混合优化算法求解此问题的流程,研究了优化问题中目标函数和约束条件的选取方式,并以机翼颤振缩比模型为算例对方法的有效性进行了验...

Design Optimization of Scaled Flutter Model Considering Structural Dynamics and Flutter Constraints

For the load-carrying structures of original model and scaled flutter are different, their aeroelastic characteristics may not be matched when their structural dynamics are matched. For this problem, a method is presented of designing a scaled flutter model which takes into consideration both structural dynamics and flutter constraints; a process of using the genetic/sensitivity-based hybrid algorithm to solve this problem is built and the method of choosing objective functions and constraint conditions is discussed. With an example of a scaled flutter model design, the validity of this method is verified. This example indicates that the design optimization method considering both structural dynamics and flutter constraints possesses better applicability than the design optimization method considering structural dynamics only.