Numerical Investigation on the Measurement Uncertainty in Operational Modal Analysis of a Civil Structure

Dynamic Behavior of the Palazzo Lombardia Tower: Comparison of Numerical Models and Experimental Results

“…Huth et al (2005) showed the advantages of using output-only system identification, but the results stress how the modal parameter estimation is affected deeply by the environmental conditions, as shown in other references (Cornwell et al 1999). Indeed, the challenge of today's research is the definition of damage-identification features independent of humidity and temperature, and being aware of all the uncertainties in the parameter identification (Cattaneo et al 2010(Cattaneo et al , 2011Pintelon et al 2007;El Kafafy et al 2012). However, OMA is more cost effective and easier to perform.…”

Dynamic Characterisation and Finite Element Updating of a RC Stadium Grandstand

“…When FE updating techniques are used to improve the correlation between the simulated numerical outputs and the experimental behavior of the real structures (based on experimental modal identification data), it is usually assumed that the test measurements represent the reference, correct estimation, and the numerical model must/can be adjusted and enhanced, at the component and/or assembly level. In this case, the presence of possible errors and/or uncertainties in the test measurements can strongly compromise the modal identification results and, consequently, the whole FE updating process [31,32].…”

Design and Installation of a Permanent Monitoring System for Palazzo Lombardia in Milano, Italy

“…Vibration levels shown in Figure 9 are increasing from level B3 (bottom) to level 37 (top) of the building in accordance to the expected mode shapes. This measurement will be the input data to an automated modal extraction procedure which will provide synthetic information on the building dynamics [13].…”