Analysis of Honeycomb and Sandwich Structure Compression Property and the Damage of Double Cell Wall 


Vol. 24,  No. 9, pp. 3245-3260, Sep.  2023
10.1007/s12221-023-00289-3


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  Abstract

Sandwich structure is widely used in aviation field due to their high out-of-plane compression properties, shear properties, and outstanding energy absorption characteristics. During the forming process, the aluminum honeycomb will form double cell wall because of adhesive layers. The double cell wall has a great influence on the compressive properties, but there are only few researches on it. In this paper, the influence of double cell wall on the compression performance of sandwich structure was studied, and the failure process of double cell was analyzed from micro perspective. Finite element models of aluminum honeycomb and sandwich structure were established in the software ABAQUS. Moreover, the unit model including double cell wall and single cell wall was also established, and then the effectiveness of the simulation was verified by experiments. The compression experiment was carried out on the universal test machine with sandwich structure and the test speed was set as 2 mm/min. The results show that the failure occurs from one end when the aluminum honeycomb faces with flat compression load alone, while the failure of the sandwich structure starts from the middle of the core. The adhesive layer in the double cell wall is subjected to both compressive stress and tensile stress, and the failure occurs first in tension position. Then, the effects of double cell wall different bonding parameters and different panel layering angles on the compressive properties of the structure were studied. The results show that the structural compression performance increases slowly after the bonding length reaches 4 mm, and the bonding thickness less than 0.1 mm has little influence on the compression performance. The fiber orientation of the panel close to the core can be designed to be 90° which is parallel to the double cell wall, which can effectively improve the flat compression performance.

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  Cite this article

[IEEE Style]

L. Xu, C. Ni, G. Liu, J. Li, "Analysis of Honeycomb and Sandwich Structure Compression Property and the Damage of Double Cell Wall," Fibers and Polymers, vol. 24, no. 9, pp. 3245-3260, 2023. DOI: 10.1007/s12221-023-00289-3.

[ACM Style]

Lihong Xu, Can Ni, Gang Liu, and Junli Li. 2023. Analysis of Honeycomb and Sandwich Structure Compression Property and the Damage of Double Cell Wall. Fibers and Polymers, 24, 9, (2023), 3245-3260. DOI: 10.1007/s12221-023-00289-3.

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