25-63 EFECTUL DEFECTELOR STRUCTURALE ASUPRA COMPORTAMENTULUI DINAMIC AL GRINZILOR COMPOZITE STRATIFICATE
EFFECT OF STRUCTURAL DAMAGES ON THE DYNAMIC
BEHAVIOUR OF LAMINATED BEAMS
This paper presents results obtained by modal analysis on composite
beam-like structures in healthy and damaged state. The aim is to obtain
damage “signatures” for all possible damage scenarios and to use these data
to assess transversal cracks based on vibration techniques, by involving natural
frequency shifts. The analysis was performed in SolidWorks software for a fivelayer
composite, 30 vibration modes being obtained by numerical simulations.
An example how to interpret the results is shown in the last section of the
paper.
Keywords: damage, finite elements, frequency, simulation, structure
Cuvinte cheie: defect, elemente finite, frecvenţă, simulare, structură
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