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摘要
This paper puts forth a new method for hydraulic gate structural damage identification based on model-updating techniques. This method transforms an identification problem into an optimization problem, defines anobjective function for a nonlinear least-squares problem with bound-constraints, and identifies the location and extent of structural damage by minimizing the sum of differences between the experimental and analytical modal data. Then a trust-region approach is used to solve the minimization problem to make such optimization process more robust and reliable. An application to damage detection of a model radial gate of steel structure that were numerically modeled and experimentally tested in laboratory, are presented. Results show advantages of the proposed method for damage detection and health diagnosis on hydraulic structures.
