Etude du comportement mécanique des matériaux cellulaires obtenus par impression 3D

Abstract

Cellular materials are distinguished by theirexceptionalmechanical and physicalproperties, as well as theirremarkableenergy absorption capacity. Cellular structures used for energy dissipation play a crucial role in engineering, allowing for the damping of shocks, vibrations, and mechanical stresses. In thisstudy, a structure inspired by the bamboo plant wasinvestigated. The structure wasdesignedusingSolidWorks software, employingdifferentnumbers of reinforcements to investigate the relationshipbetweenreinforcement and energy dissipation. These components weremanufacturedusing 3D printing technology. The resultsobtainedfrom quasi-static compression tests demonstratethat the strength of the structures canbeadjusted by modulating the number of reinforcements. The samplewith 12 doubledribsexhibits the highest plateau stress of approximately 11.25 MPa, while the samplewith 6 doubledribsisidentified as the optimal structure in terms of energy absorption and densification. Thesefindingsalignwellwith multiple scientificresearchstudies.