6533b82dfe1ef96bd1291d1c
RESEARCH PRODUCT
Indentation of rigidly supported sandwich beams with foam cores exhibiting non-linear compressive behaviour.
Joao Pedro Guimaraes AmorimGiuseppe Pitarresisubject
Nonlinear systemSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineMaterials scienceMechanics of Materialsbusiness.industryMechanical EngineeringIndentationCeramics and CompositesFoundation (engineering)Structural engineeringfoam cores indentation sandwich composites Winkler foundationComposite materialbusinessdescription
A generalized analytical approach to investigate the indentation of sandwich beams under concentrated loads is presented, based on the Winkler foundation theory. A segment-wise model is implemented to the case of fully backed sandwich beams with polymeric foam cores exhibiting generic non-linear compressive behaviours. Closed-form analytical solutions of the indentation curve are obtained for simplified foam compression behaviours: elastic-perfectly-plastic, bilinear and bilinear-perfectly-plastic. Analytical predictions are compared with experimental data from sandwiches employing foam cores with peculiar non-linear behaviours. The proposed models are found to give a better match of the experimental data than the classic elastic-perfectly-plastic model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-09-01 |