A fully implicit plasticity model for the characterization of ceramics in ballistic protection

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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.
Original languageEnglish
Title of host publication22nd Technical Meeting DYMAT 'Experimental Testing and Modelling of Brittle Materials at High Strain-Rates'
Subtitle of host publicationGrenoble, France
Pages17-22
Number of pages6
Publication statusPublished - 2016
EventDYMAT 22ND Technical Meeting: Experimental Testing and Modelling of Brittle Materials at High Strain-Rates - Grenoble, France
Duration: 19 Oct 201621 Oct 2016
Conference number: 22

Conference

ConferenceDYMAT 22ND Technical Meeting
CountryFrance
CityGrenoble
Period19/10/1621/10/16

Keywords

  • Ceramic
  • Indentation
  • JH2
  • quasi-static
  • implicit

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    Simons, E., Weerheijm, J., & Sluijs, B. (2016). A fully implicit plasticity model for the characterization of ceramics in ballistic protection. In 22nd Technical Meeting DYMAT 'Experimental Testing and Modelling of Brittle Materials at High Strain-Rates': Grenoble, France (pp. 17-22)