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Mesoscale Modeling of Microcrystalline Ceramics

John D. Clayton1,2,*, R. Brian Leavy1, Jaroslaw Knap3

1 US ARL, Impact Physics Branch, Aberdeen Proving Ground, MD, 21005-5066, USA.
2 University of Maryland, A. James Clark School of Engineering, College Park, MD 20742, USA.
3 US ARL, Computational Sciences, Aberdeen Proving Ground, MD, 21005-5066, USA.
* Corresponding Author: John D. Clayton. Email:

The International Conference on Computational & Experimental Engineering and Sciences 2019, 21(3), 50-52.


Diffuse interface models and simulations capture deformation and failure of polycrystalline ceramics with multiple phases. Two heterogeneous ceramic solids are investigated. The first consists of a boron carbide matrix phase embedded with titanium diboride grains. The second consists of diamond crystals with a smaller fraction of silicon carbide grains, where the latter may encapsulate the former in a micro- or nano-crystalline matrix and/or may be interspersed as larger micro-crystals. A general constitutive framework suitable for representing behaviors of all phases of each material system is reported. This framework is implemented in three-dimensional (3D) finite element (FE) simulations of polycrystalline aggregates under compressive loading. Numerical results demonstrate effects of grain and phase morphology and activation or suppression of slip or twinning mechanisms on overall strength and ductility.

Cite This Article

Clayton, J. D., Leavy, R. B., Knap, J. (2019). Mesoscale Modeling of Microcrystalline Ceramics. The International Conference on Computational & Experimental Engineering and Sciences, 21(3), 50–52.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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