Damage assessment of complex structures from transient dynamicresponse

摘要

Damage detection and assessment algorithm using transient dynamicresponse is developed for complex structures. A parametric systemidentification method is implemented in the algorithm as the main toolto identify a structural system. A nonlinear constrained optimizationproblem is solved for estimating optimal structural parameters. Tolocalize damaged members, the adaptive parameter grouping scheme isapplied. To assess the severity of damage statistically, the timewindowing technique is applied. Main considerations in developing thealgorithm are noise and sparsity in the measurements. A simulation studyis carried out with a truss structure excited by a harmonic force