基于晶体塑性的难变形材料不均匀变形多尺度建模研究进展

Crystal plasticity modeling and its analysis algorithms for the heterogeneous deformation prediction were analyzed and reviewed, and the key difficulties and solutions of the crystal plasticity modeling considering the multi-phase heterogeneity characteristic and grain boundary inhomogeneity characteristic were discussed. The cellular automata modeling for the microstructure evolution was analyzed and reviewed, and the key difficulties and solutions of the coupled modeling between the crystal plasticity and cellular automata considering the interaction between heterogeneous deformation and microstructural evolution were demonstrated. Moreover, thoughts of the coupling multi-scale models based on macroscale finite element method, mesoscale crystal plasticity finite element method and microscale cellular automata, and applications of these models on the multi-scale response prediction of the forming of titanium complex bulkhead components were discussed. Finally, the existing problems in current multi-scale model was analyzed, and an outlook of multi-scale modeling was given.