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Multiscale Structural Analysis of Honeycomb Sandwich Structure Using Mechanics of Structure Genome



A new multiscale modeling approach based on mechanics of structure genome (MSG) has been proposed to analyze honeycomb sandwich structures. On the one hand, MSG can be used to homogenize a honeycomb core as a homogeneous solid to get effective elastic properties without various boundary conditions (BCs). The results are compared with those obtained by using finite element (FE) based numerical homogenization method and analytical formulas. Then a though-the-thickness constitutive modeling can be conducted by MSG to model the whole honeycomb sandwich structure as a laminate for equivalent plate properties (MSG two-step). On the other hand, MSG can directly give constitutive modeling of the whole honeycomb sandwich structure as an equivalent plate to obtain the equivalent plate properties (MSG direct). The numerical case shows that the equivalent plate properties provided by MSG direct are more accurate than traditional approach when compared with the direct numerical simulation (DNS) and much more efficient than the DNS.

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