Abstract
In this study, positive-pressure, bending, and drum peel tests were carried out for aluminum honeycomb sandwich panels made of different materials and with different dimensions. The results of these tests not only precisely revealed the relationships between the mechanical properties of aluminum honeycomb sandwich panels and the material dimensions of the face and core layers, the layout mode of the core layer, and the connecting mode between the face layers and core layers, but also determined the reliable mechanical equivalent model. The test results indicate that when the specimen was subjected to the vertical load, the compression properties of aluminum honeycomb sandwich panels were mainly determined by its core layer, while the face layer mainly relieves the axial stress and restrains the deformation of the core layer. In the flexural test, the face layer is the main part subjected to the load, whereas the core layer shows supporting, stabilizing, and strengthening effects, slowing the deformation of the face layer; flexural-tensile properties can be somewhat affected by the layout type of the core layer. The equivalent plate model, honeycomb plate model, and sandwich panel model were screened based on the experimental results, indicating that the sandwich panel model provided a more accurate description. The sandwich panel model was further modified, ultimately resulting in a more effective equivalent model that can accurately reflect the mechanical properties of the aluminum honeycomb sandwich panels.
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Funding
This study was funded by the National Natural Science Fund (Grant Number 51578540).
Conflict of InterestThe authors declare that they have no conflict of interest.
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Cai, L., Zhang, D., Zhou, S. et al. Investigation on Mechanical Properties and Equivalent Model of Aluminum Honeycomb Sandwich Panels. J. of Materi Eng and Perform 27, 6585–6596 (2018). https://doi.org/10.1007/s11665-018-3771-2
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DOI: https://doi.org/10.1007/s11665-018-3771-2