A Fourier-based numerical homogenization tool for an explosive material

Abstract : This paper describes the development of a numerical homogenization tool adapted to TATB-based pressed explosives. This is done by combining virtual microstructure modeling and Fourier-based computations. The polycrystalline microstructure is represented by a Johnson-Mehl tessellation model with Poisson random nucleation and anisotropic growth of grains. Several calculations are performed with several sets of available data for the thermoelastic behavior of TATB. Good agreement is found between numerical predictions and experimental data regarding the overall thermal expansion coefficient. The results are shown to comply with available bounds on polycrystalline anisotropic thermoelasticity. Finally, the size of the representative volume element is derived for the bulk, shear and volumetric thermal expansion moduli.
Liste complète des métadonnées

Cited literature [19 references]  Display  Hide  Download

https://hal-mines-paristech.archives-ouvertes.fr/hal-01141495
Contributor : François Willot <>
Submitted on : Tuesday, May 19, 2015 - 10:22:12 PM
Last modification on : Monday, November 12, 2018 - 10:58:30 AM
Document(s) archivé(s) le : Thursday, April 20, 2017 - 1:36:45 AM

File

gasnier20150411.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Jean-Baptiste Gasnier, François Willot, Hervé Trumel, Bruno Figliuzzi, Dominique Jeulin, et al.. A Fourier-based numerical homogenization tool for an explosive material. Matériaux & Techniques, EDP Sciences, 2015, 103 (3), pp.308. ⟨10.1051/mattech/2015019⟩. ⟨hal-01141495v2⟩

Share

Metrics

Record views

835

Files downloads

743