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Distortional hardening plasticity model for paperboard
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- Borgqvist, Eric (author)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
- Lindström, Tommy (author)
- Tryding, Johan (author)
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- (creator_code:org_t)
- Elsevier BV, 2014
- 2014
- English.
- In: International Journal of Solids and Structures. - : Elsevier BV. - 0020-7683. ; 51:13, s. 2411-2423
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Keyword
- Distortion hardening
- Paperboard
- Anisotropy
- Plasticity
- Finite strains
- Polyconvexity
Publication and Content Type
- art (subject category)
- ref (subject category)
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- Borgqvist, Eric
- Lindström, Tommy
- Tryding, Johan
- Wallin, Mathias
- Ristinmaa, Matti
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