An identification method of triangular impulse force based on BMO is proposed. In the study the dynamic response equation of the beam is constructed first

to obtain the dynamic responses of the beam under impulse load

the structure is further discretized by finite element method. The parameter identification problem will be treated as an optimization of an objective function based on the deviation of responses between calculated and measured. Bird mating optimizer is utilized to solve the optimization. Four parameters

the location

maximum magnitude

load time and unload time are identified successfully

additional results show that the proposed method is capable to identify the parameters precisely even under noise affection

and BMO achieve better results than other traditional heuristic algorithms

which shows a potential in practical application.