基于萤火虫算法的飞机弱刚性件装配定位策略优化

Locating Strategy Optimization of Aircraft Weakly Rigid Parts Assembly Based on Firefly Algorithm

针对飞机装配过程中零件刚度低、易变形的特点,提出了一种飞机弱刚性件定位策略优化设计方法。该方法以"N-2-1"定位原理为基础,以自重等外载引起的最大变形量最小为目标函数,通过有限元仿真计算不同定位方案下的最大变形量,并采用萤火虫算法实现了定位点布局的迭代优化。最后以飞机典型结构件为例,验证了该方法的可行性和有效性。

For the low-rigidity and easy deformation of aircraft components in assembly process, a locating strategy optimization method of aircraft weakly rigid parts was presented. According to ＂N-2-1＂ positioning principle, the method took the minimum deformation of parts caused by deadweight as the objective function. The maximum deformation of parts under different positioning strategies was calculated by the finite element method, then the optimal points layout was given based on the iteratively search of the firefly algorithm. Finally, taking typical aircraft structure as an example, the feasibility and validity of the method was verified.