Three honeycomb Al samples(HC1,HC2 and HC3)with high metallurgical bonding were prepared by in-serting Al sheets between different layers of regularly arranged circular honeycomb Al to form a laminated circular honey-comb structure by vacuum sintering.On this basis,quasi-static compression experiments in the in-plane direction were carried out on the three HC structures,and the in-plane deformation behaviors of the HC structures were analyzed using the ABAQUS finite element method.The results show that the addition of Al sheets provides significant lateral restraint to the honeycomb and suppresses the bulge expansion,avoiding the formation of X-shaped local shear zones.In terms of mechanical properties,the specific energy absorption of HC2 and HC3 is higher than HC1,reaching 7.041 J/g and 7.048 J/g,respectively,while HC1 has a longer stress plateau length of 0.675.In addition,the finite element analysis results are in high agreement with the experimental results,and the deformation behaviors are the same,which confirms the accuracy of the finite element model.
laminated honeycombvacuum sinteringquasi-static compressionfinite element analysisenergy absorption
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