Abstract: In the normal load balancing scheme allowed by the static test of amphibious aircraft buoy landing, compressive large-scale water load acting on the buoy structure causes large wing deformation which will affect the test accuracy. Therefore, load balancing research to reduce wing deformation is conducted. The deflection curve equation of the wing which is approximated to cantilever beam structure is established using Green’s function on the basis of the mechanics model. The deflection and the rotation angle of the boundary rib of the examined area are taken as the optimization targets, and a multi-objective function is established for the first time. The function is then transformed into a single objective one via the analytic hierarchy process and the standardized processing method of range transformation. The load balancing scheme is optimized by the ant colony algorithm with crossover and mutation factors. The results of both finite element analysis and the test showed that the optimized load balancing scheme can significantly reduce the wing deformation, and the balanced load does not affect the true deformation of the examined area, thus proving the correctness and feasibility of the optimization scheme.

Key words: amphibious aircraft, static test, wing deformation, deflection, multi-objective optimization