Journal
COMPOSITE STRUCTURES
Volume 176, Issue -, Pages 539-546Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2017.05.058
Keywords
Effective elastic properties; Spherical shell laminated; Composite; Asymptotic homogenization; Spherical assemblage model
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Funding
- FSP (Cooperation Scientifique Franco-Cubaine) [29935XH]
- French Embassy in La Habana
- Departamento de Matematicas y Mecanica
- IIMAS-UNAM
- University of Havana
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The paper focuses on the calculation of the effective elastic properties of a laminated composite shell with imperfect contact between the layers. To achieve this goal, first the two-scale asymptotic homogenization method (AHM) is applied to derive the solutions for the local problems and to obtain the effective elastic properties of a two-layer spherical shell with imperfect contact between the layers. The results are compared with the numerical solution obtained by finite elements method (FEM). The limit case of a laminate shell composite with perfect contact at the interface is recovered. Second, the elastic properties of a spherical heterogeneous structure with isotropic periodic microstructure and imperfect contact is analyzed with the spherical assemblage model (SAM). The homogenized equilibrium equation for a spherical composite is solved using AHM and the results are compared with the exact analytical solution obtained with SAM. (C) 2017 Elsevier Ltd. All rights reserved.
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