Title: On mechanical modeling of composite materials
Abstract:A periodic micromechanical modeling concept that utilizes continuum elements and a representative volume element (RVE) loaded with periodic boundary conditions is proposed to study paper network prope...A periodic micromechanical modeling concept that utilizes continuum elements and a representative volume element (RVE) loaded with periodic boundary conditions is proposed to study paper network properties. The RVE has a volume of 1 mm3 and consists of fibers that are perfectly bonded. The fiber properties are represented by an isotropic elastic-plastic model that has an additional hardening effect at large strains, which has been observed for single fibers with high fibril angle. As non-linearities are accounted for in the material model, a fairly small number of elements are needed in the RVE to enable predictions of anisotropic fiber network properties, in this work 10×10 10 elements were used. The model has been used to simulate uniaxial tension tests in the three principal directions (MD, CD and ZD). An anisotropic fiber network structure was generated. With this structure, different deformation mechanisms were activated during loading in the different directions.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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