Multi scale modeling of phenomena caused by changes of the deformation path in materials forming

Application of the CAFE model, which combines Cellular Automata with Finite Element Method, to prediction of material flow in processes characterized by change in the deformation path, is the objective of the paper. The general idea of the CAFE model and its application to modelling initiation and propagation of micro shear bands and shear bands is presented. Transition rules developed for new application of the model, which is simulation of processes characterized by the changes in deformation path, are described next. Primary results obtained for simulation of the compression-tension process are presented and compared with the experimental data available in the literature.