An updating procedure based on measured Frequency Response Function (FRF) data is proposed to correct the numerical parameters of a continuous B-spline shell dynamical model of a bridge deck. Since standard FRF based parametric updating techniques may fail in practical applications because of resonance frequency shift between measured and analytical simulations, a Frequency Domain Assurance Criterion (FDAC) correlation technique was considered and included in the formulation of the objective function. Updating parameters are normalized and constrained in a compact domain by means of a proper variable transformation choice. An example, concerning the model updating of a real railway bridge, is illustrated and discussed.
A. Carminelli, G. Catania (2010). B-spline Finite element updating of a railway bridge deck. LYON : French mechanical society (AFM).
B-spline Finite element updating of a railway bridge deck
CARMINELLI, ANTONIO;CATANIA, GIUSEPPE
2010
Abstract
An updating procedure based on measured Frequency Response Function (FRF) data is proposed to correct the numerical parameters of a continuous B-spline shell dynamical model of a bridge deck. Since standard FRF based parametric updating techniques may fail in practical applications because of resonance frequency shift between measured and analytical simulations, a Frequency Domain Assurance Criterion (FDAC) correlation technique was considered and included in the formulation of the objective function. Updating parameters are normalized and constrained in a compact domain by means of a proper variable transformation choice. An example, concerning the model updating of a real railway bridge, is illustrated and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
