Structural damage identification method based on BMO (bird flock genetic optimization) algorithm

The invention mainly relates to an engineering application of a BMO (bird flock genetic optimization) algorithm in the field of structural damage identification, and specifically discloses a structural damage identification method based on a BMO algorithm. The structural damage identification method mainly comprises the following steps: (1) establishing a finite element model of a damaged structure by using a finite element method, and extracting natural frequency, vibration modes and other modal parameters of the structure; (2) ensuring standards and establishing an objective function (MAC) by using the damaged structure and calculating natural frequency residual errors and modes of the structure; (3) optimizing the objective function by using the BMO algorithm until loop stop conditions are satisfied; and (4) finally obtaining an optimal solution namely a damage identification result. Compared to a traditional sensitivity method, by adopting the structural damage identification method disclosed by the inven