Method and device for calculating equivalent loading point of aerodynamic load

The invention discloses an aerodynamic load equivalent loading point calculation method and device. The method comprises the steps that an aircraft coordinate system is established in finite element software; the aircraft landing gear skin cabin door is partitioned, then grid division is conducted on each partition, and unit node coordinates and unit center point coordinates of each grid unit under an aircraft coordinate system serve as screening points to be output; acquiring the total aerodynamic load of the origin O of the aircraft coordinate system under the action of the aerodynamic load; for any one screening point N in all the screening points in each partition, calculating moments in three directions at the N point and root-mean-square values of the moments; the screening point with the minimum root-mean-square value of each partition serves as an aerodynamic load equivalent loading point of the partition; and after the aerodynamic load equivalent loading points of all the partitions are obtained, the