Dynamic response of aluminum foam sandwich panel to transverse impact

摘要

The dynamic response of aluminum foam sandwich panels is studied experimentally by impacting the panels at mid-span with metal foam projectiles. Two types of core are considered: open-cell foam and closed-cell foam. By changing the launching speed of metal foam projectiles, different deformation/failure modes of sandwich panels were observed. Strain history of face sheets in different positions was also recorded by strain gauges to investigate the deformation mechanism. The experiment results indicate that when the strength of core was relatively small and the impulse exerted was large, erosion failure of front face and shear failure of core occurred.