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International Journal of Material Forming

, Volume 1, Supplement 1, pp 1231–1234 | Cite as

Modelling of friction with respect to size effects

  • Z. HuEmail author
  • F. Vollertsen
Symposium MS18: Wear and friction in material forming

ABSTRACT

In this paper a size dependent FEM-simulation for sheet metal forming was realized applying the size dependent friction functions acquired from strip drawing tests [1]. The software ABAQUS 6.6.3 was used to simulate the strip drawing tests and deep drawing process in different process dimensions. A 2-dimensional model was built for strip drawing test and a 3-dimensional model was built for deep drawing process. Both processes were experimentally carried out in different dimensions. A constant friction coefficient as well as a friction function, which shows a dependence of friction coefficient on the contact pressure, was applied in the simulation. The simulated punch force vs. punch travel curves were then compared with the experimental curves. A discussion about the difference between these curves with consideration of tribological size effects will be given.

Key words

Scaling Tribological size effects Friction 

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REFERENCES

  1. 1.
    F. Vollertsen, Z. Hu, Tribological Size Effects in Sheet Metal Forming Measured by a Strip Drawing Test, Annals of CIRP 2006, vol. 55/1, 291–294.Google Scholar
  2. 2.
    D.D. Olssen, N. Bay, Prediction of Limits of Lubrication in Strip Reduction Testing, Annals of CIRP 2004, 53/1, 231–234.Google Scholar
  3. 3.
    P. Becker, H.J. Jeon, C. C. Chang, A.N. Bramley, A Geometric Approach to Modelling Friction in Metal Forming, Annals of CIRP 2003, 52/1, 209–212.Google Scholar
  4. 4.
    F. Vollertsen, Z. Hu, H. Schulze Niehoff, C. Theiler, State of the art in micro forming and investigations into micro deep drawing, Journal of Materials Processing Technology, 2004, 151, 70–79.Google Scholar
  5. 5.
    N. Tiesler, U. Engel, Microforming - Effects of Miniaturisation, Proceedings of the 8th International Conference on Metal Forming, Eds. Pietrzyk, M., Kusiak, J., ec al., Kraków, 2000, 355–360Google Scholar
  6. 6.
    Z. Hu, H. Schulze Niehoff, F. Vollertsen, Determination of the Friction Coefficients in Deep Drawing, Process scaling, eds.: Vollertsen F., Hollmann, F., BIAS-Verlag, ISBN 3-933762-14-6, Strahltechnik 24, 2003, 27–34Google Scholar
  7. 7.
    Z. Hu, F. Vollertsen, Scaled Friction Test Integrated in Deep Drawing, ICTMP2004, Denmark, Ed. Niels Bay, ISBN: 87-91035-12-0, 561–568Google Scholar
  8. 8.
    Z. Hu, F. Vollertsen, Tribological Size Effects in Sheet Metal Forming, ICTMP2007, Yokohama, Japan, Ed. Akira Azushima, ISBN 978-4-9903785-0-9, 163–168Google Scholar
  9. 9.
    A. B. Richelson, E. van der Giessen, Size Effects in Sheet Drawing, 9th International Conference on Sheet Metal 2001, eds. Duflou, J.R., Geiger, M., et al., 263–270Google Scholar
  10. 10.
    A. Messner, Kaltmassivumformung Metallischer Kleinstteile -Werkstoffverhalten, Wirkflaechen -reibung, Prozessauslegung-, Eds. Geiger, M., Feldmann, K., ISBN 3-87525-100-8, 1998Google Scholar
  11. 11.
    M.W. Storoschew, E. A. Popow, Grundlagen der Umformtechnik, VEB Verlag Technik Berlin, 1968Google Scholar
  12. 12.
    Z. Hu, H. Schulze Niehoff, F. Vollertsen, Tribological size effects in deep drawing, ICNFT2007, eds. F. Vollertsen, S. Yuan, ISBN 978-3-933762-22-1, 573–582Google Scholar

Copyright information

© Springer/ESAFORM 2008

Authors and Affiliations

  1. 1.BIAS Bremer Institut fuer Angewandte StrahltechnikBremenGermany

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