Title
A fully implicit plasticity model for the characterization of ceramics in ballistic protection
Author
Simons, E.C.
Weerheijm, J.
Sluys, L.J.
Publication year
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 meshdependent results.
Subject
Mechatronics, Mechanics & Materials
EBP - Explosions, Ballistics & Protection
TS - Technical Sciences
Defence Research
Ballistics
Defence, Safety and Security
Ceramic
Indentation
JH2
Quasi-static
Implicit
To reference this document use:
http://resolver.tudelft.nl/uuid:ff4fdb9c-c347-44bd-bd06-3c200890776b
TNO identifier
573116
Source
22nd Technical Meeting DYMAT 'Experimental Testing and Modelling of Brittle Materials at High Strain-Rates', Grenoble, France, 19-21 October 2016, 17-22
Document type
conference paper