A method for parameter identification of carbon fiber composite materials is proposed.Based on the modal data obtained from the unilateral constrained modal test of laminated plates,the square sum of the difference between the measured frequency and the calculated frequency of finite element method is used as the objective function to transform the parameter identification problem into an optimization problem.The sensitivity of material parameters is analyzed,and the material parameters of composite laminates are identified by genetic algorithm.The modal tests of the same laminated plate are carried out under free boundary conditions,and the calculated-measured modal frequency errors of the parameters before and after identification are compared.The results show that the difference between the calculated and measured free modal frequencies of the identified parameters is smaller for the same laminate,which indicates that the method can accurately identify the parameters of carbon fiber composite laminates.
维普
万方数据