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Numrering	Referens	Omslagsbild	Hitta
1.	Harrysson, Anders, et al. (författare) Large strain elasto-plastic model of paper and corrugated board 2008 Ingår i: International Journal of Solids and Structures. - : Elsevier BV. - 0020-7683. ; 45, s. 3334-3352 Tidskriftsartikel (refereegranskat)abstract An anisotropic elasto-plastic constitutive model of paper material is presented. It is formulated in a spatial setting in which anisotropic properties are accounted for by use of structural variables. A multiplicative split of the deformation gradient is employed to introduce plasticity. A similar approach is used to model the plastic deformation of the substructure. The yield surface adopted is based on the Tsai-Wu failure criterion, used previously to model failure of paper material. A non-associated plasticity theory is employed to calibrate the model to experimental data. It turns out that a multi-axial loading situation is needed to calibrate the model and here a biaxial tension test is audited. The model was implemented into a finite element environment and the creasing process of a corrugated board panel is investigated.

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