Evaluation of the applicability of an energy method to calculate the damping in a lab-scale structure

Evaluation of the applicability of an energy method to calculate the damping in a lab-scale structure

Sánchez Gómez, S. (TU Delft Applied Mechanics; TNO)
Metrikine, A. (TU Delft Offshore Engineering; TU Delft Engineering Structures)

Vestroni, Fabrizio (editor)
Gattulli, Vincenzo (editor)
Romeo, Francesco (editor)

Engineering Structures

2017

The aim of this paper is to identify the local energy dissipation in a lab-scale structure by means of the energy flow analysis. In most of the existing approaches the damping is identified either in terms of the modal damping factors or at the material scale. In this paper, an alternative method to these global and material-based approaches by studying the energy flow around a certain part of the structure is proposed. The approach presented in this paper accounts for the energy flow through specific boundaries that surround the structural part of interest. Within this approach, the local energy dissipation can be calculated by isolating specific parts of the structure while taking into account the rest of the structure by means of the energy flux thorough the boundaries. This approach allows to identify both the total energy dissipation and the specific damping operator in the chosen part of the structure.

Damping operator
Energy flow
identification
Lab-scale structure

http://resolver.tudelft.nl/uuid:6a8799db-b278-4361-9c92-3e048fd725ec

https://doi.org/10.1016/j.proeng.2017.09.018

Elsevier

X International Conference on Structural Dynamics, EURODYN 2017, 199

10th international conference on recent advances in structural dynamics, 2010-07-12 → 2010-07-14, Faculty of Civil and Industrial Engineering of Sapienza University of Rome, Roma, Italy

Procedia Engineering, 1877-7058, 199

Institutional Repository

conference paper

© 2017 S. Sánchez Gómez, A. Metrikine