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Coupling diffraction contrast tomography with the finite element method 

Abstract : This paper explains how to turn full three dimensional (3D) experimental grain maps into a finite elements (FE) mesh suitable for mechanical analysis. Two examples from diffraction contrast tomography characterizations are presented. Deformation of a pure titanium sample with 1400 grains is computed using elastic anisotropy and accurate boundary conditions allows to correctly capture the grain to grain elastic strain variations. In the second example a significantly large zone of a polycrystalline Al–Li sample is meshed and computed using elastoplastic finite strain calculation. Mean lattice reorientations and intra-grain lattice orientation spread are obtained as a function of deformation.
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Submitted on : Monday, June 27, 2016 - 3:24:53 PM
Last modification on : Thursday, June 9, 2022 - 8:20:07 AM

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Henry Proudhon, Jia Li, Peter Reischig, Nicolas Guéninchault, Samuel Forest, et al.. Coupling diffraction contrast tomography with the finite element method . Advanced Engineering Materials, Wiley-VCH Verlag, 2016, 18, pp.903-912. ⟨10.1002/adem.201500414⟩. ⟨hal-01337825⟩



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