Mathematical modeling of technological modes for straightening sheets and plates on a press
Abstract
Gribkov E., Kassov V., Vasylieva L.
Mathematical modeling of technological modes for straightening sheets and plates on a press
The work is devoted to the actual problem of determining rational technological modes and design parameters of equipment when editing letters on the press based on skimmed-element modeling in the ESS system. The goal of the work is to develop a mathematical model of the process of straightening sheets and plates on a press, taking into account changes in the physical and mechanical characteristics of the material and its implementation by the finite element method, which will make it possible to obtain fields of changes in the integral characteristics of the process and predict the stress-strain state of the material for subsequent automation. -tified design of technological parameters of equipment operation and increasing the efficiency of engineering calculations at the stage of technology development. Mathematical modeling of straightening processes is presented taking into account the basic principles of plasticity theory, which makes it possible to predict with sufficiently high accuracy the distribution of the stress-strain state in each grid node of the finite element model along the deformation cell. A technique has been developed for numerically solving the problem of plastic deformation based on the finite element method using the capabilities of Abaqus CAE. The numerical model of the deformation process is based on flow theory, and the workpiece material is considered as an incompressible elastic-plastic body, and the speed of movement of the upper punch and the stationary fixation of the lower punches were chosen as limiting conditions. The use of the presented finite element modeling of the technological parameters of the sheet-straightening process when performing engineering calculations will ensure increased accuracy in predicting technological settings and the efficiency of designing sheet-leveling equipment, and, consequently, improved product quality. Also presented, the simulation results can be used directly in the press control system and increase its productivity by reducing the time for sheet processing.
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