Impact load identification of composite laminated cylindrical shell with stochastic characteristic

Based on augmented Tikhonov regularization (ATR) method and matrix perturbation method, a new computational inverse method is proposed to reconstruct impact loads acting on composite laminated cylindrical shell with random characteristics. Firstly, the stability and effectiveness of augmented Tikhonov regularization method are investigated in solving deterministic inverse problem about impact load identification of composite laminated cylindrical shell structure. Secondly, exploiting the matrix perturbation method, the impact load identification of composite laminated cylindrical shell structure with uncertain factors is transformed into a range of traditional impact load identification with deterministic structure. Lastly, using the knowledge of statistical theory, the statistical features of identified impact force are also analyzed. Numerical simulations validate that the proposed algorithm in this paper successfully solves the impact load identification of composite laminated cylindrical shell with and without random characteristics.