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A damage analysis of steel-concrete composite beams via dynamic methods. Part II: Analytical models and damage detection

Dilena, Michele
•
Morassi, Antonino
2003
  • journal article

Periodico
JOURNAL OF VIBRATION AND CONTROL
Abstract
This paper is the second part of an experimental-analytical investigation on the dynamic behavior of damaged steel-concrete composite beams. In the first part of the research, experimental results of a comprehensive series of dynamic tests performed on composite beams with damage in the connection were presented and discussed. Experimental observations suggested the formulation of a composite beam analytical model, where the strain energy density of the connection also includes an energy term associated to the occurrence of relative transversal displacements between the r.c. slab and the steel beam. A comparison with experimental results shows that the model enhances accuracy in describing the undamaged state of composite beams and that it is also appropriate to accurately predict the dynamic behavior under damaged conditions. A damage detection technique based on the measurement of variation in the first flexural frequencies was then applied to the suggested model and gave positive results.
DOI
10.1177/1077546303009005003
WOS
WOS:000182915800003
SCOPUS
2-s2.0-0037514599
Archivio
http://hdl.handle.net/11390/670345
Diritti
closed access
Soggetti
  • Steel-concrete compos...

  • structural diagnostic...

  • small vibrations

  • analytical models

Web of Science© citazioni
40
Data di acquisizione
Jun 6, 2022
Visualizzazioni
1
Data di acquisizione
Jun 8, 2022
Vedi dettagli
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