A novel approach to monitor the dynamic response of a structure in operating condition is presented as a further application of operational modal analysis. Taking advantage of extensive experimental measurements on ground, the suggested methodology reconstructs the operating full-field dynamic response in absence of an updated numerical model using few experimental measurements during operations. The role of operational modal analysis in the evaluation of the modal characteristics from ground vibration tests is assessed in the paper, as well as the influence of introducing un-scaled mode shapes and biased frequency response functions due to stochastic white noise loading with unknown amplitude.
Using OMA for full-field dynamic response identification / Grappasonni, Chiara; M., Chierichetti; Coppotelli, Giuliano; M., Ruzzene. - ELETTRONICO. - (2013), pp. 1-8. (Intervento presentato al convegno 5th International Operational Modal Analysis Conference, IOMAC 2013 tenutosi a Guimaraes nel 13 May 2013 through 15 May 2013).
Using OMA for full-field dynamic response identification
GRAPPASONNI, CHIARA;COPPOTELLI, Giuliano;
2013
Abstract
A novel approach to monitor the dynamic response of a structure in operating condition is presented as a further application of operational modal analysis. Taking advantage of extensive experimental measurements on ground, the suggested methodology reconstructs the operating full-field dynamic response in absence of an updated numerical model using few experimental measurements during operations. The role of operational modal analysis in the evaluation of the modal characteristics from ground vibration tests is assessed in the paper, as well as the influence of introducing un-scaled mode shapes and biased frequency response functions due to stochastic white noise loading with unknown amplitude.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
