A B-spline based FE model updating procedure is proposed. The approach is based on the least squares minimization of an objective function dealing with residues, defined as the difference between the model based response and the experimental measured response, at the same frequency. The B-spline FE model can make it possible to limit the number of dofs. A constraint model and a damping model are proposed, being parameterized by means of B-spline functions. The incompatibility between the measurement dofs and the model dofs is also taken into consideration. An example dealing with a composite car front spoiler is reported, considering the presence of random noise. Results are critically discussed.

B-spline laminate shell finite element updating by means of FRF measurements

CARMINELLI, ANTONIO;CATANIA, GIUSEPPE
2011

Abstract

A B-spline based FE model updating procedure is proposed. The approach is based on the least squares minimization of an objective function dealing with residues, defined as the difference between the model based response and the experimental measured response, at the same frequency. The B-spline FE model can make it possible to limit the number of dofs. A constraint model and a damping model are proposed, being parameterized by means of B-spline functions. The incompatibility between the measurement dofs and the model dofs is also taken into consideration. An example dealing with a composite car front spoiler is reported, considering the presence of random noise. Results are critically discussed.
Modal Analysis Topics, Volume 3
127
139
A. Carminelli; G. Catania
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/104368
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact