Cita:
Composite Structures, August 2010, v. 92, nº 9, pp. 2285-2291. Proceeding of: 15th International Conference on Composite Structures (ICCS 15), Porto, Portugal, June 15-17, 2009
ISSN:
0263-8223
DOI:
10.1016/j.compstruct.2009.07.018
Agradecimientos:
The authors are indebted to the Autonomous Community of Madrid and University Carlos III of Madrid (Project CCG08 UC3M/DPI 4348) for the financial support of this work.
The dynamic flexural behaviour of sandwich beams, with composite face-sheets and a foam core, was analysed by developing a 3D finite-element model. To model the core behaviour, a crushable foam model was used. The Hou criteria were used to predict the failure The dynamic flexural behaviour of sandwich beams, with composite face-sheets and a foam core, was analysed by developing a 3D finite-element model. To model the core behaviour, a crushable foam model was used. The Hou criteria were used to predict the failure of the face-sheets. Dynamic bending tests were performed to validate the numerical model. The comparison between numerical and experimental results in terms of contact-force histories, peak-force values, absorbed energy, and maximum displacement of both face-sheets was satisfactory. It was revealed that the collapse of the foam core under the impact region favoured the failure of the upper face-sheet.[+][-]
