The quasi-static compressive stress of reinforced honeycomb is studied. Firstly

the structure of the reinforeed honeycomb is analyzed

the Y-shaped cells are extracted

and the plastic hinge is analyzed based on this. Then

referring to the simplified superfolding theory

based on Tresca and Mises yield criterion

the theoretical formula of axial plateau stress is deduced. Thirdly

the aluminum alloy 5052H18 with a wall thickness of 0. 15 mm and a side length of 2. 5 mm is selected

and the honeycomb simulation model is established by Ls-Dyna to obtain the average stress. Comparing the theoretical value with the simulated value

the results show that: under the two yield criteria

the correlation between the theoretical value and the simulation result is 0.96

and the deviation is from -12.16% to 3.60%. Finally

the sample preparation and quasi-static test of ordinary and "4+1"honeycombs shows that the deviation between the theoretical strength and the actual strength of the two specifications is between -2.51% and 1.56%. It shows that the theoretical calculation formula given in this paper is correct

which can provide an effective design basis for the selection of reinforeed honeycombs

and provide a certain guiding value for engineering applications.