Print Email Facebook Twitter A fully implicit plasticity model for the characterization of ceramics in ballistic protection Title A fully implicit plasticity model for the characterization of ceramics in ballistic protection Author Simons, E.C. (TU Delft Applied Mechanics) Weerheijm, J. (TU Delft Applied Mechanics) Sluys, Lambertus J. (TU Delft Applied Mechanics) Date 2016 Abstract The Johnson-Holmquist-2 ceramic model is used for quasi-static indentation simulation. A modification is proposed to an associated plasticity formulation. This allows for a fully implicit solution scheme, where dilatation is used instead of the traditional explicit bulking formulation. Dilatation is shown to have an important influence on ring-crack formation during indentation. A mesh refinement study is performed to show the current tensile failure behaviour leads to mesh-dependent results. Subject CeramicIndentationJH2quasi-staticimplicit To reference this document use: http://resolver.tudelft.nl/uuid:714ccf99-384b-4ee4-bc52-73c59b166abb Source 22nd Technical Meeting DYMAT 'Experimental Testing and Modelling of Brittle Materials at High Strain-Rates': Grenoble, France Event DYMAT 22ND Technical Meeting, 2016-10-19 → 2016-10-21, Grenoble, France Part of collection Institutional Repository Document type conference paper Rights © 2016 E.C. Simons, J. Weerheijm, Lambertus J. Sluys Files PDF ECSimons_paper_DYMAT_2016.pdf 1.32 MB Close viewer /islandora/object/uuid:714ccf99-384b-4ee4-bc52-73c59b166abb/datastream/OBJ/view