Structural Modeling in the Mechanics of Porous Materials |
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Authors: | Pleskachevskii Yu M Shil'ko S V Chernous D A |
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Institution: | (1) Belyi Metal-Polymer Research Institute, Belarus National Academy of Sciences, Gomel', Belarus |
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Abstract: | A new method for analyzing the deformation behavior of rigid and elastic foams with a small volume content of solid phase ( < 0.2) is developed. Various structural models for describing the elastic behavior of rigid and elastic plastic foams are used and compared. The results of structural simulation of anisotropic auxetic (i.e., having a negative Poisson ratio) foams with concave cells are presented. For cyclic uniaxial compression of rigid foams and volumetric deformation of elastic foams, the stress-strain curves are obtained. The general shape of the curves agrees well with the nonlinearly elastic behavior of plastic foams observed in experiments. |
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Keywords: | porous material strut models structural unit effective elastic properties nonlinear viscoelastic behavior |
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