Abstract
In order to further improve the impact resistance of composite multi-cell thin-walled structures under axial loading, a new type of composite multi-cell sandwich tubular structure is proposed. Based on the MAT54 material model and the Chang-Chang failure criterion, a composite laminated shell modeling method was developed to simulate the failure behavior of the material under axial compression load and verified by quasi-static compression tests. The effectiveness of the simulation model is verified by comparing the parameters of peak load and specific energy absorption. The impact-resistance sensitivity of cell number and sandwich structure in composite multicellular structure was studied by this model. The results show that number of cells have a significant effect on the specific energy absorption of the composite multi-cell structure.
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