Continuum Modeling of Wrinkles and Explicit FEM Modeling of Paperboard Deep-Drawing
2016 (English)In: 2016 Progress in Paper Physics Seminars / [ed] Samuel Schabel, 2016Conference paper, Abstract (Other academic)
Deep drawing of paperboard requires the creation of wrinkles for successful forming of a paperboard cup. A phenomenological model for the mechanical response of wrinkles is proposed and based on the assumption that the wrinkles have a mechanical response equivalent to that of a plastic hinge (i.e. the internal moment in the hinge is held constant during deformation). This 1-D model has been verified with two experiments.
Furthermore, this phenomenological model has been expanded into a 3-D continuum constitutive model, which considers the initiation and propagation of wrinkles, large deformations due to wrinkle formation and wrinkle compression, and permanent deformations. This 3-D continuum model has been compared to and verified against experimental deep-drawing results. Experiments and simulations have been compared in terms of springback, wrinkle propagation, and punch force. Additionally, the model provided insight into the deep-drawing process by establishing better understanding of the initiation of wrinkling.
Place, publisher, year, edition, pages
Research subject Solid Mechanics
IdentifiersURN: urn:nbn:se:kth:diva-203354OAI: oai:DiVA.org:kth-203354DiVA: diva2:1082041
Progress in Paper Physics Seminars 2016 22-26 September, Darmstadt, Germany
QC 201703162017-03-152017-03-152017-03-16Bibliographically approved