[SY-F11] Scalable and Directionally-Sensitive Three-Dimensional Quantifying of Orientation and Dislocation Density Gradients in Crystal Plasticity Computer Simulations
In-grain orientation and dislocation density gradients, especially those building up at grain and phase boundaries, tune to significant extent a variety of microstructure evolution mechanisms: the nucleation and incipient stage of discontinuous dynamic recrystallization, deformation texture evolution, or phase transformations to name but a few. Despite being additionally also of relevance for stress and strain partitioning, their comprehensive quantification in three dimensions, though, has received little attention so far and remains elusive.
In this work we report on higher-order neighbor- and signed-distance-based techniques for quantifying such gradients; resulting in a tool applicable to point-cloud-based data. These are tracked for instance via integration point cloud sets in finite-strain-formalism full-field crystal plasticity computer simulations. Exemplarily, as such an evaluation of dislocation gradients resulting from Crystal Plasticity deformation simulations using the DAMASK spectral solver [1, 2] will be presented and their relevance for discontinuous dynamic recrystallization discussed.
[1] P. Eisenlohr, M. Diehl, R.A. Lebensohn, F. Roters: A spectral method solution to crystal elasto-viscoplasticity at finite strains, International Journal of Plasticity 46 (2013), 37 - 53
[2] P. Shanthraj, P. Eisenlohr, M. Diehl, F. Roters: Numerically robust spectral methods for crystal plasticity simulations of heterogeneous materials, International Journal of Plasticity 66 (2015) 31 - 45
In this work we report on higher-order neighbor- and signed-distance-based techniques for quantifying such gradients; resulting in a tool applicable to point-cloud-based data. These are tracked for instance via integration point cloud sets in finite-strain-formalism full-field crystal plasticity computer simulations. Exemplarily, as such an evaluation of dislocation gradients resulting from Crystal Plasticity deformation simulations using the DAMASK spectral solver [1, 2] will be presented and their relevance for discontinuous dynamic recrystallization discussed.
[1] P. Eisenlohr, M. Diehl, R.A. Lebensohn, F. Roters: A spectral method solution to crystal elasto-viscoplasticity at finite strains, International Journal of Plasticity 46 (2013), 37 - 53
[2] P. Shanthraj, P. Eisenlohr, M. Diehl, F. Roters: Numerically robust spectral methods for crystal plasticity simulations of heterogeneous materials, International Journal of Plasticity 66 (2015) 31 - 45