Abstract
In this study, the influence of temperature on axial crushing behavior of multi-walled tube-reinforced aluminum foams (MWTRF) were researched by means of experiment, numerical prediction and theoretical analysis. The results indicate that the peak force and energy absorption performance of the MWTRFs present noticeably higher than those of the sum of aluminum foam (AF) and empty multi-walled tube (EMWT) at high temperature. The axial crushing performance of glued MWTRF is higher that of unglued MWTRF. This advantage gradually decreases with the increase of temperature due to a decrease of adhesive strength. The reinforcing mechanism is that AF in MWTRF inhibits buckling and alters the crushing deformation mode of EMWT, significantly improving the crushing performance and energy absorption performance of MWTRF. In addition, compared with the competing materials, MWTRFs have the outstanding performance of energy absorption under high temperature in a map for material selection.
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