Damage Identification of Beam Structures Based on Genetic Algorithm and Sensitivity Analysis

摘要

Based on the damage scalar model and the sensitivity analysis of frequency and mode shape, the Combined Multiple Damage Location Assurance Criterion (CMDLAC) based on the change of frequencies and mode shapes was proposed. Then, the damage identification problem is transformed to the constrained optimum problem and the genetic algorithm (GA) is adopted for the damage localization of beam structures. At last, the numerical simulation results of a 3-span continuum beam structure verified the proposed method.