The study of marginal deformations of the leaf extracts with regard to plastic thinning and destruction of the material

Cover Page

Cite item


The aim of work. The paper analyzes the process of sheet drawing and develops a method for determining the minimum curvature of the torus fillet in the formation of a cylindrical product (glass), taking into account the plastic thinning of the deformable material by the end edge of the pressing punch. Methods. The existing scheme of forming with the use of permissible coefficients of drawing and tensile strength of the material, representing the basis of deformation-force calculation, which often ignores the factor of deformation thinning and its impact on the strength of the material, which together can lead to excess of the allowable stress in the material, causing its rupture, is analyzed. A mathematical model of the volume stress state of the metal is developed, which allows to estimate the value of the thinning in the formation of the torus surface of different curvature, followed by the approximation of the values found by a polynomial function. Considering the criterion of limit loads the level of radial stresses during folding and stretching of the sheet material, taking into account its thinning, the minimum curvature of the torus surface of the glass is established. Results. The results obtained will allow to simulate the stress-strain state of the metal in the development of sheet drawing technology: to establish the value of thinning and to estimate the level of radial stresses in the formation of the torus surface rounding to prevent the destruction of the elongated glass (separation of the bottom), which guarantees quality products.

About the authors

Yury A. Morozov

MIREA - Russian Technological University

Author for correspondence.
SPIN-code: 3189-5426

Cand. Sci. (Eng.), Associate Professor, Department of Information Technologies in Machineand Instrument Engineering

20 Stromynka St., Moscow, 107996, Russian Federation


  1. Devendar G., Chennakesava Reddy A. (2016). Study on Deep Drawing Process Parameters – A Review. International Journal of Scientific & Engineering Research, 7(6), 149–155.
  2. Reddy A.C.S., Rajesham S., Reddy P.R., Kumar T.P., Goverdhan J. (2015). An experimental study on effect of process parameters in deep drawing using Taguchi technique. International Journal of Engineering, Science and Technology, 7(1), 21–32.
  3. Ishimaru E., Takahashi A., Ono N. (2010). Effect of material properties and forming conditions on formability of high-purity ferritic stainless steel. Nippon Steel Technical Report No. 99, 26–32.
  4. Kokhan L.S., Lebedev N.N., Morozov Yu.A., Mochalov N.A. (2007). Proektirovanie kalibrov sortovykh stanov i operatsiy listovoy shtampovki [Designing gauges section mills and stamping operations]. Moscow: MGVMI Publ. (In Russ.).
  5. Kokhan L.S., Morozov Yu.А., Shul’gin А.V. (2014). The change in the thickness of walls of cylindrical glasses at the extract without clip. Structural Mechanics of Engineering Constructions and Buildings, (5), 9–13. (In Russ.)
  6. Popov E.A. (1977). Osnovy teorii listovoj shtampovki [Fundamentals of sheet metal forming theory]. Moscow: Mashinostroenie Publ. (In Russ.)
  7. Bruschi S., Altan T., Banabic D., Bariani P.F., Brosius A., Cao J., Ghiotti A., Khraisheh M., Merklein M., Tekkaya A.E. (2014). Testing and modelling of material behaviour and formability in sheet metal forming. CIRP Annals – Manufacturing Technology, 63(2), 727–749.
  8. Wiebenga, J.H., Atzema, E.H., An Y.G., Vegter, H., van den Boogaard, A.H. (2014). Effect of material scatter on the plastic behavior and stretchability in sheet metal forming. Journal of Materials Processing Technology, 214(2), 238–252.
  9. Verhov E.Yu., Morozov Yu.A. (2011). Analysis and development of manufacturing technology of bent plate parts. Bulletin of the Moscow State Open University. Series: Technique and Technology, 4(6), 14–19. (In Russ.)
  10. Tomlenov A.D. (1972) Teoriya plasticheskogo deformirovaniya metallov [Theory of plastic deformation of metals]. Moscow: Metallurgiya Publ. (In Russ.)
  11. Isachenkov E.I. (1978). Kontaktnoe trenie i smazki pri obrabotke metallov davleniem [Contact friction and lubricants in metal forming]. Moscow: Mashinostroenie Publ. (In Russ.)

Copyright (c) 2019 Morozov Y.A.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies