Numerical and experimental investigation of fiber metal laminates with elastomeric layers under low?velocity impact

This study aims to investigate the effects of elastomers on fiber metal laminates (FMLs) subjected low-velocity impact loads. A compounded natural rubber layer was added conventional FMLs containing glass/epoxy composite plies and Al 6061-T6 layers, measuring its effect behavior structure in indentation at energy levels 25 45 J. It found that addition an elastomeric back face increased structural toughness, pre-fracture deformation, specific absorption while reducing damage maximum load. Moreover, positioning elastomer a closer distance frontal reduced load capacity. Then, standard material characterization tensile, shear, compressive were performed via universal testing machine split Hopkinson pressure bar apparatus. numerical model developed based advanced finite element code LS-DYNA, results validated by comparison experimental data.