Open Information and Computer Integrated Technologies

During improvement of the quality of products and reducing its cost, sheet metal stamping production, being the basis for the aerospace industry, should more intensively introduce modern production technologies, especially design. There are a large number of factors influencing the stamping process (especially parts with complex geometry), more comprehensive consideration of which would allow to optimize such processes, thereby reducing the manufacturing cost and improving the  quality. Currently the processes of forming and separation of complex parts by  of an elastic pad are of interest from the point of view of optimization and the final determination of the nature of the behavior of the material. This includes the refinement of such parameters as the maximum permissible thinning, the strength of the die. Clarification of these and other parameters will significantly reduce energy required. Determination of these and other parameters of sheet metal stamping is possible due to application of the modern analysis methods. For numerical studies in the sheet stamping production, the variational method or FEM is the most suitable. Computer modeling makes it possible to investigate the behavior of the material, the kinematics of the workpiece movement during forming process, select the correct loading scheme for the workpiece, and also makes it possible to consider several options for the location of the workpiece in the die, which is very important for  stamping thin sheet metal blanks. It provides a significant reduction of the time and costs for carrying out natural experiments, and decrease of technological preproduction preparation of sheet metal stamping. The development of a mathematical model based on the FEM makes it possible to determine not only the required parameters of the process, but also to consider the forming process during its certain stages, to determine the stress-strain state, indicating at the same time the problem zones of excessive thinning, loss of stability, the need to apply a die with a back pressure for cutting of thin sheet metal blanks. It allows to evaluate the quality of a ready product according to the calculated parameters, to use the results obtained for the design of elastic pad

process modeling, sheet metal stamping, blanking-piercing, sheetmetal blank, elastic medium

Avdeev V.M., Aksenov L.B., Aliev I.S. Izgotovlenie zagotovok plasticheskim deformirovaniem. [Manufacturing of the blanks by plastic deformation]. Leningrad, Politekhnika Publ., 1991, 351p.

Zastela, O. M., Trifonov, O. V., Vodolazhs'kii, V. P., Modelyuvannya protsesu shtampuvannya dіafragmi zginannyam listovoї zagotovki elastichnim seredovishchem [Simulation of sheet metal bending of dyafragm by elastic pad] Otkrytye informatsionnye i komp'yuternye integrirovannye tekhnologii, sb. nauch. tr. Nats. Aerokosm . un-ta im. N.E. Zhukovskogo «KhAI». Publ., Kharkіv, 2019, no. 84, pp. 93-109.

Arzamasov B.N. Konstruktsionnye materialy. [Engineering materials] Spravochnik. Moskva, «Mashinostroenie». Publ., 1990, 688 p.

Romanovskii V.P. Spravochnik po kholodnoi shtampovke. [Cold stamping reference book] Leningrad, «Mashinostroenie». Publ., 1971, 782 p.

Sukhov V.V. Optimizatsiya konstruktivno-tekhnologicheskogo oblika detalei zagotovitel'no-shtampovochnogo proizvodstva v aviastroenii. [Design and engineering features optimization of the parts for preliminary production in aircraft manufacturing] Kiev. Tekhnіka. Publ., 1997, 161 p.

Limberg E.A. Issledovanie osnovnykh tekhnologicheskikh parametrov protsessov i osnastki zagotovitel'no-shtampovochnogo proizvodstva matematicheskim modelirovaniem s ispol'zovaniem strukturno-variatsionnogo metoda. Avtoref. dys. ... kand. tekhn. nauk [Investigation of the main engineeraing parameters of the processes and tooling of the preliminary stamping production by mathematic modelling with the help of structural-variational method. Avtoref. diss. … cand. tech. sci.]. Kharkiv. «KhAI» im. N.E. Zhukovskogo. Publ., 1993, p. 35.

Hallquist J. O. LS-DYNA theoretitsal manual. J. O. Hallquist. Livermore Software Technology Tsorporation: Livermore, TsA, 2006, 498 p.

Komarov, A.D. Opyt shtampovki poliuretanom stal'nykh detalei slozhnoi formy. [Experience of complex part stamping by elastic pad] KShP: nauchno-texny`chesky`j zhurnal. Moskva. 1991, no. 8, pp. 11 – 19.