In this paper, an orthogonal trapezoidal honeycomb aluminum material is prepared, which is intended to be used as an energy-absorbing device for vehicles instead of traditional energy-absorbing box, and the impact mechanics and energy-absorbing properties of the material at low speed are studied. Firstly, a structure of orthogonal trapezoidal honeycomb aluminum was fabricated using an adhesive bonding method. Experimental methods were then employed to study the in-plane compression process of the material, obtaining stress and energy absorption characteristics of the material. Secondly, the deformation and stress of the material were analyzed by theoretical analysis method, and the energy absorption of the material was compared with the test results. Finally, the loading process of the material was simulated by means of simulation. Combined with the optimization design method, the optimal energy absorption parameters of the material were obtained as a plate thickness of 0.50 mm and an upper side length of 3.0 mm. At this time, the specific energy absorption of the orthogonal trapezoidal honeycomb aluminum material can reach 28.8 kJ/kg, which is better than the traditional energy absorption box structure. It characterizes the feasibility of orthogonal trapezoidal honeycomb aluminum replacing traditional energy absorption materials.
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