Abstract
The effective elastic properties of composites with double periodic nanofibers are studied theoretically. Based on the Gurtin–Murdoch surface elasticity theory, the elastic field in the nanocomposite can be expanded by applying a functional variational method to a unit cell. The analytical solution of the effective anti-plane shear modulus of the periodic nanocomposites is presented. The convergence of the analytical results is discussed. The comparisons of the obtained macroscopic and nanoscale solutions with the existing results show the effectiveness and accuracy of the proposed method. Based on the analytical solution obtained, the size effect of the effective properties of the periodic nanocomposites is discussed. The effects of the period ratio of microstructure, the fiber/matrix stiffness matching and the nanoporous volume fraction on the effective shear modulus of the nanocomposites are discussed in detail.
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Acknowledgements
This research was supported by the Natural Science Foundation of Hebei Province (A2022203025) and the Science and Technology Project of Hebei Education Department (ZD2021104).
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Zheng, X., Xiao, J., Yan, P. et al. Evaluation of the effective elastic properties of periodic nanofiber composites with surface effect using eigenfunction expansion-variational method. Acta Mech 234, 3459–3468 (2023). https://doi.org/10.1007/s00707-023-03567-6
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DOI: https://doi.org/10.1007/s00707-023-03567-6