Perlov V. Technological heredity in the process of sheet pressing at a fail-safe designs creation

The object of the study are sheet-metal stamping processes. The study aims to enhance the safety of structures by controlling the parameters of technological heredity in the process of stamping their elements. To achieve the goal of mathematical methods used and the applied theory of plasticity, the phenomenological theory of deformability, as well as the hardness of the method, experimental-computational method of networks and approximate engineering method for calculating the stress-strain state. Scientific novelty lies in the fact that he received the further development of a method for constructing the calibration curves for sheet materials, which allows the use of the hardness values measured by the rebound (by Lieb). Improved method for charting the plasticity for sheet materials and developed a design model for the tensile test. Developed an experimental method for determining the estimated energy-power parameters of the deflection of circular thin sheet plates clamped along the contour. A method for analyzing the stress-strain state in the process forming body parts and parameters that affect the technological and heredity, which lays in their stamping. Improved experimental and computational method for determining the energy of plastic deformation of sheet materials in the process of cold forming and energy absorption structural elements as a result of the dynamic loads during operation. An experimental-computational method determining the direction of the main deforming force, and forming parts from sheet material. The degree of implementation - results of the thesis are introduced in a limited liability company "Scientific-Technical Center Avtopoliprom" (Lviv), in Vinnytsia branch of the Kiev Research Institute of Forensic Expertise of the Ministry of Justice, as well as in the educational process of the Strength of Materials and Applied Mechanics pulpit and Technology and Automation Engineering pulpit Vinnitsa national technical university. Field (industry) use - automotive companies that use sheet forming processes, research institutions, where energy is necessary to determine the plastic deformation of metal as in the processing pressure, and conducting vehicular expertise.