Dynamics of a laminated composite beam with delamination and inclusions
1 Institute of Mechanics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
2 Dept. of Applied Mechanics, Lublin University of Technology, Lublin 20-618, Poland
Received: 4 June 2013
Revised: 2 August 2013
Published online: 30 September 2013
In this work numerical and experimental study of the dynamic behaviour of a composite laminated beam having delamination is presented. The model of delamination takes into account a contact interaction between sublaminates including normal forces, shear forces and additional damping. In order to verify the model special samples of multilayered beams have been manufactured. Small parts of adjacent layers have been cut and replaced by inclusions from different materials modelling delamination. The mechanical properties of the inclusions have been considered during the numerical calculations. The beams were subjected to a short pulse loading and then their response was registered. The results from the numerical simulation were in a good agreement with the experimental results. The significance of the additional damping due to delamination on the response of the beam was confirmed numerically and experimentally.
© EDP Sciences, Springer-Verlag, 2013