Drawing with Thinning under Viscoplasticity Deformation of the Anisotropic Material

Authors: Chudin V.N., Platonov V.I. Published: 24.06.2023
Published in issue: #2(145)/2023  

DOI: 10.18698/0236-3941-2023-2-73-82

Category: Mechanical Engineering and Machine Science | Chapter: Technology and Equipment of Mechanical and Physical Processing  
Keywords: viscoplasticity, stresses, deformations, speed, material discontinuity


The paper considers the drawing process with wall thinning of the anisotropic workpieces made of high-strength materials exposed to viscoplasticity deformation. Scientific literature is paying insufficient attention to calculation of the deformation processes of workpieces exposed to viscoplasticity. Relationships are proposed to determine stresses and continuity of the workpiece material during drawing in heating the cylindrical products with a thinned wall. State of hot material viscoplasticity is accepted under the plane deformation scheme. Equilibrium equation, yield condition for anisotropic material and discontinuity kinetics equations were used making it possible to predict strength characteristics and accuracy of the products obtained. Calculations of the drawing process modes for workpieces made of the AMg6 aluminum alloy and of the VT6s titanium alloy were performed. Graphic dependences are demonstrated of alterations in the operation specific force and in the material continuity value on the motion speed of the deforming punch. At the given forming temperatures, the energy continuity equation corresponds to the aluminum alloy, and the deformation equation corresponds to the titanium alloy. Influence of the workpiece mechanical properties anisotropy on the drawing technological conditions was studied. It is shown that force modes and continuity alteration of the deformed material depend on the anisotropy coefficient at a given temperature. This factor is determined by strain strengthening of the workpiece material and softening over time

Please cite this article in English as:

Chudin V. N., Platonov V.I. Drawing with thinning under viscoplasticity deformation of the anisotropic material. Herald of the Bauman Moscow State Technical University, Series Mechanical Engineering, 2023, no. 2 (145), pp. 73--82 (in Russ.). DOI: https://doi.org/10.18698/0236-3941-2023-2-73-82


[1] Matveev A.D., ed. Kovka i shtampovka. T. 4. Listovaya shtampovka [Forging and stamping. Vol. 4. Sheet stamping]. Moscow, Mashinostroenie Publ., 2010.

[2] Popov E.A. Osnovy teorii listovoy shtampovki [Fundamentals of sheet stamping theory]. Moscow, Mashinostroenie Publ., 1977.

[3] Renne I.P. Predposylki teoreticheskogo i eksperimentalnogo izucheniya protsessa vytyazhki s utoneniem stenki [Prerequisites for theoretical and experimental study of the drawing process with wall thinning]. V kn.: Progressivnaya tekhnologiya glubokoy vytyazhki listovykh materialov [In: Progressive technology of deep drawing of sheet materials]. Tula, Priokskoe knizhn. izd. Publ., 1968, pp. 160--169 (in Russ.).

[4] Renne I.P., Rogozhin V.N., Kuznetsov V.P., et al. Vytyazhka s utoneniem stenki [Hood with wall thinning]. Tula, TPI Publ., 1970.

[5] Yakovlev S.S., ed. Izotermicheskoe formoizmenenie anizotropnykh materialov [Isothermal shaping of anisotropic materials]. Moscow, Mashinostroenie Publ., 2009.

[6] Yakovlev S.P., Yakovlev S.S., Andreychenko V.A. Obrabotka davleniem anizotropnykh materialov [Processing of anisotropic materials by pressure]. Kishinev, Kvant Publ., 1997.

[7] Nechepurenko Yu.G., Yakovlev S.P., Yakovlev S.S. Glubokaya vytyazhka tsilindricheskikh izdeliy iz anizotropnogo materiala [Deep drawing of cylindrical products from anisotropic material]. Tula, TulSU Publ., 2000.

[8] Nechepurenko Yu.G. Perspektivnye tekhnologii izgotovleniya tsilindricheskikh izdeliy [Perspective technologies for the manufacture of cylindrical products]. Tula, TulSU Publ., 2001.

[9] Ovchinnikov A.G., ed. Progressivnye tekhnologicheskie protsessy kholodnoy shtampovki [Progressive technological processes of cold stamping]. Moscow, Mashinostroenie, 1985.

[10] Malinin N.N. Polzuchest v obrabotke metallov [Creep in metal processing]. Moscow, Yurayt Publ., 2020.

[11] Golenkov V.A., Yakovlev S.P., eds. Teoriya obrabotki metallov davleniem [Theory of metal forming]. Moscow, Mashinostroenie Publ., 2009.

[12] Chudin V.N., Chernyaev A.V., Tesakov A.M. To calculation of stresses in drawing of anisotropic viscoplastic materials. Tsvetnye metally, 2021, no. 5, pp. 84--88 (in Russ.). DOI: https://doi.org/10.17580/tsm.2021.05.11

[13] Romanov K.I. Mekhanika goryachego formoizmeneniya metallov [Mechanics of hot forming of metals]. Moscow, Mashinostroenie Publ., 1993.

[14] Kolmogorov V.L. Mekhanika obrabotki metallov davleniem [Mechanics of metal forming]. Moscow, Metallurgiya Publ., 1986.

[15] Chernyaev A.V., Chudin V.N., Tesakov A.M. Serial-aligned blank drawing at visco-plastic deformation. Naukoemkie tekhnologii v mashinostroenii [Science Intensive Technologies in Mechanical Engineering], 2019, no. 1, pp. 3--7 (in Russ.). DOI: https://doi.org/10.30987/article_5c129147c32b90.29812449