In this paper, methodological approaches to improving the accuracy of calculating the complex little-studied technological process of torsion forging based on computer simulation are provided. A method for setting the inverse problem for one of the known types of compression tests for aluminum alloy samples is presented. The results of simulation tests and their comparison with the data obtained during the experiments are presented. A compression test of solid cylindrical samples is considered. The scheme of realization of the inverse problem (inverse method) is presented. The results can be applied when preparing initial data at the stage of development or optimizing the technological process of torsion forging based on computer simulation in specialized programs, for example, the QFORM program.