Numerical analysis of strains and stresses in the hot cogging process

In this paper, the analysis of the three-dimensional strain state for the hot cogging process of a steel tool with the application of the finite element method is presented. The results of work connected with the simulation of metal flow scheme, and fields of stress, strain and temperature in the material deformation process in the hot forging conditions are presented. The distribution of the effective strain, the effective stress, mean stresses and temperature on the surface of forging cross sections are determined. The numerical analysis was performed with the application of the programme DEFORM-3D. The theoretical results are subjected to experimental verification.