A hybrid approach for the efficient computation of polycrystalline yield loci with the accuracy of the crystal plasticity finite element method

Abstract Direct experimental evaluation of the anisotropic yield locus (YL) a given material, representing zeros material’s function in stress space, is arduous. It much more practical to determine YL by combining limited measurements strengths with predictions from numerical models based on microstructural features such as orientation distribution (ODF; also referred crystallographic texture). For latter, several different strategies exist current literature. In this work, we develop and present new hybrid method that combines efficiency simplicity classical (CYL) accuracy computationally expensive crystal plasticity finite element (CPFEM). The development our approach presented two steps. first step, demonstrate for diverse textures proposed good agreement shape predicted estimated either CPFEM or experiments, even pronounced plastic anisotropy. shown calibration only parameters CYL stresses load cases obtained simulations experiments produces reliable computation polycrystal textures. evaluated using results previously established entire experiments. second point cloud data tensors calibrated are interpolated within deviatoric space cubic splines smooth can be constructed. Since produced function, formulation potentially used an standard continuum methods commonly analysis.