多工况下机翼结构优化设计方法研究

从工程实际需要出发,提出了一种考虑了位移约束、应力约束与稳定性的机翼多工况优化方法。将多工况问题转化为多约束问题,对各种约束进行合理分类,利用最大约束法对约束进行合理的消减,使用复合形法对结构进行优化。算例结果表明,所提方法可行,结果正确,对加快结构优化技术的实际工程应用有着很高的价值。

Research on structure design optimization of the wing under multiple load cases

In order to meet the need of the engineering practice, a method was proposed in this paper for solving the question of structure design optimization of the wing subjected to the displacement, stress and stability constraints under multiple load cases. The optimization under multiple load cases was translated into the optimization under multiple constraints, and then the constraint functions were separated into some kinds according to their characteristic and cut by the maximum constraint method properly. Finally the Complex Method was used to complete the optimization. The results of the calculative examples indicate that the method presented in this paper is feasible and correct, has a significant value in accelerating the engineer realization of the structure optimization