Composites with multiple (bi-) interpenetrating phases are ideally placed to realise multi-functionality and certain multifunctional
and smart materials may be modeled as bi-continuous two-phase composites. This paper estimates the
mechanical properties of such materials using finite element analysis and homogenization. The effect of phase volume
fraction and contiguity on the properties is investigated for a range of microstructures with triply periodic minimal P
interfaces between the two phases. The results show that the properties of the composite depend on not only the overall
volume fraction but also the contiguity of the constituent phases.
The design of the skins has been identified as a major issue for morphing aircraft wings. Corrugated laminates
provide a good solution due to their extremely anisotropic behavior. However, the optimal design of a morphing
aircraft requires simple models of the skins that may be incorporated into multi-disciplinary system models. This
requires equivalent material models that retain the dependence on the geometric parameters of the corrugated
skins. An analytical homogenization model, which could be used for any corrugation shape, is suggested in this
paper. This method is based on a simplified geometry for a unit-cell and the stiffness properties of original sheet.
This paper investigates such a modeling strategy and demonstrates its performance and potential.
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