engleski

Homogenization of regular open cell cellular structures accounting filler material

Open cell cellular structures are used as energy absorption members in engineering structures. Numerical modeling of such complex structures involves enormous numerical models, which generally can be used to model only a smaller portion of the material. Homogenization of a representative volume element of an open cell structure can be applied as long as instabilities or localization phenomena do not occur within the microstructure. Using the effective stress-strain behavior obtained for the RVE, the material parameters of a nonlinear effective material model for the open cell structure can be calculated on a meso-scale level and used for macro-scale computation of the whole structure. Such a general multi-scale approach in modeling of complex inhomogeneous structures enables a numerical simulation of real irregular open cell structures under realistic mechanical loading conditions.

Homogenization; open-cell cellular

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