Displacement Based Approach for a Robust Operational Modal Analysis

  • Gerardo De Canio
  • Palle Andersen
  • Ivan Roselli
  • Marialuisa Mongelli
  • Enrico Esposito
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)


Robust estimation of the dynamic modal parameters of structures during shaking table experiments is done by means of efficient time domain data-driven Crystal Clear Stochastic Subspace Identification (CC-SSI) of vibration data recorded by a new, innovative, high resolution 3-D optical movement detection and analysis tool tracking the dynamic displacement of several selected points of the structures during the dynamic tests of natural (earthquake) and artificial (mechanical) induced vibrations. The measure of the displacements is a crucial task for the numerical and experimental studies in structural dynamics, especially within the displacement based approach in seismic design and calculations. The innovative monitoring technique measures 3 axial absolute displacements with easy and fast test setup, high accuracy and the possibility to link the 3D-motion time histories of the tracked markers with CAD drawings of the structure and validate the FE models in real time experimental data assimilation.


Mode Shape Modal Parameter Frequency Response Function Stabilization Diagram Torsion Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Gerardo De Canio
    • 1
  • Palle Andersen
    • 2
  • Ivan Roselli
    • 1
  • Marialuisa Mongelli
    • 1
  • Enrico Esposito
    • 3
  1. 1.ENEA-Italian Natonal Agency for new technologies, energy and sustainable economic developmentRomaItaly
  2. 2.Structural Vibration Solutions A/SAalborgDenmark
  3. 3.Artemis srl c/o Polytechnic University of MarcheAnconaItaly

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