Damage detection by an adaptive real-parameter simulated annealing genetic algorithm

Authors:
Rong-Song He;Shun-Fa Hwang
Affiliations:
Institute of Engineering Technology, National Yunlin University of Science and Technology, 123 University Road, Sec. 3, Touliu 640, Taiwan, ROC and Department of Mechanical Engineering, Wu Feng In ...;Institute of Engineering Technology, National Yunlin University of Science and Technology, 123 University Road, Sec. 3, Touliu 640, Taiwan, ROC
Venue:
Computers and Structures
Year:
2006

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Abstract

An effective algorithm, which combined an adaptive real-parameter genetic algorithm with simulated annealing, is proposed to detect damage occurrence in beam-type structures. The proposed algorithm uses the displacements of static response and natural frequencies of modal analysis, which are obtained by finite element software ANSYS. There are three different kinds of beam structures to verify the performance of the proposed algorithm. These three cases have different boundary conditions and different damage scenarios. From the results, it is demonstrated that the proposed algorithm is efficient in flexural stiffness damage identification for beam-type structures under free of noise condition. Even under the case of noise, the results show that the searched solutions are still in reasonable precision.