Modeling of Effective Material Distribution of Stamping Equipment in Forming Processes

The study is devoted to the construction of a model of topology optimization of stamping tools. The model takes into account the cyclic loading of the body, because today stamps are used in multi-batch and small-batch production of thin-walled aircraft products. The study is devoted to topological optimization of dies used in metal forming processes. The results of optimizing the volume of the die material and the number of loading cycles at which the reliability of the structure is ensured are compared. The stress state of the dies in various forms is analyzed, conclusions are drawn about the acceptable values of volume reduction. Loading conditions, areas free from optimization, were taken into account when modeling the process of material redistribution. The dependence of the number of loading cycles on the possible removal of the volume of material is constructed on the basis of a series of mathematical modeling experiments. Optimization seems appropriate when removing part of the material no more than 60%. The sections of the side faces seemed less loaded due to the vertical load, which is a feature of the processes of forming cold sheet drawing and molding. In the case of prolonged cyclic loading, stress accumulation and the appearance of the first signs of failure are possible. The results obtained make it possible to evaluate the possibility of topological optimization of the mold during the long-term operation of the dies used in stamping.