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  • Borgqvist, Eric, et al. (author)
  • Distortional hardening plasticity model for paperboard
  • 2014
  • In: International Journal of Solids and Structures. - : Elsevier BV. - 0020-7683. ; 51:13, s. 2411-2423
  • Journal article (peer-reviewed)abstract
    • A distortional hardening elasto-plastic model at finite strains suitable for modeling of orthotropic materials is presented. As a prototype material, paperboard is considered. An in-plane model is established. The model developed is motivated from non-proportional loading tests on paperboard where the paperboard is pre-strained in one direction and then loaded in the perpendicular direction. A softening effect is revealed in the pre-strained samples. The observed experimental findings cannot be accurately predicted by current models for paperboard. To be able to model the softening effects, a yield surface based on multiple hardening variables is introduced. It is shown that the model parameters can be obtained from simple uniaxial experiments. The model is implemented in a finite element framework which is used to illustrate the behavior of the model at some specific loading situations and is compared with strain fields obtained from Digital Image Correlation experiments.
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  • Result 1-1 of 1
Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Ristinmaa, Matti (1)
Tryding, Johan (1)
Borgqvist, Eric (1)
Lindström, Tommy (1)
Wallin, Mathias (1)
University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Engineering and Technology (1)
Year
2014 (1)

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