Investigation into characterization of rhombus dodecahedron closed-cell cellular materials

Based on cell formed principle, geometrical model which describes cellular materials closed-cell rhombus dodecahedron with thick edge is constructed. The dependence of relative density on microstructure and the unitary relation are also gained; relative elastic modulus and Poisson' ratio are calculated, the influence of microstructure and relative density on above two material parameters are analysed. The results show that single-cell wall thickness is the secondary factor of relative density increment, wall-face connective curvature radius is the primary factor of relative density increment; the influence of increasing solid in wall-faces connective place on relative elastic modulus is same. These results can provide principle basis for cellular material parameters design.