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The article presents the existing methods of implementation of rapid prototyping technologies in rapid production. It is performed using computer modeling programs with integrated modules of generative design based on different topology optimization methods. In the environment of ANSYS Mechanical (Workbench) the finite element method established the dependence of strength parameters on the density of the generated mesh of the reinforcing contour of the part. According to the results of the simulation, the graphical dependencies of the maximum general stresses and the margin of safety of the part depending on the materials of the 3D models under the action of equivalent stresses were obtained.