A new type of combined honeycomb structure produced by optimally organizing the hexagons and square unit cells is proposed. The related equivalent elastic parameters are studied based on the strain energy equivalent theory. A numerical simulation method is used to verify the correctness of the equivalent mechanical model. A good agreement between the simulation values and theoretical solutions is observed. The study of mechanical properties of the combined honeycomb structure shows the great advantages in mechanical properties as compared with the traditional hexagonal honeycomb structure. With the same equivalent density, the in-plane equivalent elastic modulus of the new combined honeycomb is improved to 22%, the shear modulus enhanced to 95%. The external equivalent elastic modulus and shear modulus are improved to 33% and 29%, respectively. The carried out study provides a theoretical basis for the combined honeycomb structure’s further research and also gives a new way to improve the current honeycomb sandwich.
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Published in Prykladna Mekhanika, Vol. 58, No. 3, pp. 132–143, May–June 2022.
* This work is supported by The National Natural Science Foundation of China (51305232). The Key Projects of Science and Technology Research Plan in Education Department of Hubei Province (D20181206) and The Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University.
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Li, X., He, R., Xu, X. et al. Innovative Design and Equivalent Mechanical Properties of a New Combined Honeycomb Structure*. Int Appl Mech 58, 361–372 (2022). https://doi.org/10.1007/s10778-022-01161-2
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DOI: https://doi.org/10.1007/s10778-022-01161-2