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.

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.
Proceedings of the XVIIth Symposium Vibration Chocs & Bruit VCB2010
1
13
A. Carminelli; G. Catania
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/90485
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