RESEARCH OF THE PROCESS OF AXISYMMETRIC UPSETTING BY COMPUTER SIMULATION

Arising in the process of upsetting of cylindrical workpieces stress-strain state has a signifi cant effect on the necessary consumer qualities of the fi nished products. Signifi cant infl uence on the fi nal distribution of strain and stress has the original aspect ratio of height and diameter of the workpiece. It is often diffi cult to analyze state of the metal in real conditions of upsetting, and sometimes it is impossible, but modern metgods of computer simulation allow to penetrate deep into researching process. To verify the adequacy of the data obtained in the Simufact Forming the authors made modeling of upsetting of three samples with different ratios of height and diameter (H0 / D0 : 3,75; 1,875; 1,25). Next, the simulation results (stress-strain state, metal fl ow, distribution power parameters of the process) were compared with the actual processes described in the literature. The obtained results allow to make a conclusion about high qualitative convergence of the produced simulation with real processes.

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