Advertisement

Experimental Determination of Redundant Deformation

  • T. Z. Blazynski
Chapter

Abstract

The study of the incidence, pattern and magnitude of the redundant deformation in any forming process requires that the processed specimen be suitably marked before the operation. The observed changes in the position, shape, and so on, of the marker, produced during the passage through the working zone, will be related to the redundant shears.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Blazynski, T.Z. Optimisation of die design in the extrusion of rod using model materials. Int. J. mech. Sci. (1971), 13, 113.CrossRefGoogle Scholar
  2. 2.
    Blazynski, T.Z., and Jubb, C. Dynamic and dimensional similarity of model and prototype Assel tube-elongating mills. J. Inst. Met. (1971), 99, 186.Google Scholar
  3. 3.
    Hill, R., and Tupper, S.J. A new theory of the plastic deformation in wire drawing. J. Iron Steel Inst. (1948), 159, 353.Google Scholar
  4. 4.
    Johnson, W. Experiments in plane strain extrusion. J. Mech. Phys. Solids (1956), 4, 269.CrossRefGoogle Scholar
  5. 5.
    Frisch, J., and Thompsen, E.G. Trans. A.S.M.E. (1954), 76, 599.Google Scholar
  6. 6.
    Wistreich, J.G. Investigation of the mechanics of wire drawing. Proc. Inst. mech. Engrs (1955), 169, 654.CrossRefGoogle Scholar
  7. 7.
    Blazynski, T.Z., and Cole, I.M. An investigation of the plug drawing process. Proc. Inst. mech. Engrs (1960), 174, 797.CrossRefGoogle Scholar
  8. Blazynski, T.Z., and Cole, I.M. An investigation of the sinking and mandrel drawing process. Proc. Inst. mech. Engrs (1963–4), 178, 867.Google Scholar
  9. 9.
    Johnson, W., and Kudo, H. The mechanics of metal extrusion. Manchester University Press (1962).Google Scholar
  10. 10.
    Loizou, N., and Sims, R.B. B.I.S.R.A. Report No. MW/A/50/52 (1953).Google Scholar
  11. 11.
    Karnes, C.H., and Ripperger, E.A. Strain-rate effects in cold-worked high-purity aluminium. J. Mech. Phys. Solids (1966), 14, 75.CrossRefGoogle Scholar
  12. 12.
    Samanta, S.K. On relating the flow stress of aluminium and copper to strain, strain rate, and temperature. Int. J. mech. Sci. (1969), 11, 433.CrossRefGoogle Scholar
  13. 13.
    Bodsworth, C., Halling, J., and Barton J.W. The use of paraffin wax as a model material to simulate the plastic deformation of metals. J. Iron Steel Inst. (1957), 185, 375.Google Scholar
  14. 14.
    Halling, J. and Mitchell, L.A. Advances in machine tool design and research (Proc. 5th Int. M.T.D.R. Conf.), Pergamon Press, Oxford (1965), 353.Google Scholar
  15. 15.
    Holmquist, J.L. Investigation of the piercing process by means of model wax billets. Iron Steel Engr. (1952), 29 (12), 53.Google Scholar
  16. Blazynski, T.Z., and Cole, I.M. An analysis of redundant deformations in rotary piercing. Proc. Inst. mech. Engrs (1963–4), 178, 867.CrossRefGoogle Scholar
  17. 17.
    Chang, K.T., and Brittain, T.M. An investigation of analog materials for the study of deformations in metal processing simulations. Proc. A.S.M.E., J. Eng. Ind. B (1968), 90, 381.CrossRefGoogle Scholar
  18. 18.
    Cook, P.M. True stress—strain curves for steel etc. Proc. Conf. on Properties of Materials at High Rates of Strain. Inst. mech. Engrs (1957).Google Scholar
  19. 19.
    Hodierne, F.A. PhD thesis, University of London (1961).Google Scholar
  20. Wilcox, R.J., and Whitton, P.W. The cold extrusion of metals using lubrication at slow speeds. J. Inst. Met. (1958–9), 87, 289.Google Scholar
  21. 21.
    Kocsis, I., and Zachar, L. Kohaszati Lapok (1957), (1–2), 71 (A.E.C. translation TR3836).Google Scholar
  22. 22.
    Feltham, P. in Metal Treatment (1956), 23, 440.Google Scholar
  23. 23.
    Orowan, E., and Pascoe, K.J. Iron Steel Inst. Special Report No. 34 (1946), 124.Google Scholar
  24. 24.
    Blazynski, T.Z. Strain rates in wire drawing and tube-making. Engineer (1967), 223, 627.Google Scholar
  25. 25.
    Oxley, P.L.B. Allowing for strain effects in the analysis of metal working processes. In Mechanical properties at high rates of strain, Institute of Physics (1975), 359.Google Scholar
  26. 26.
    Bramley, A.N., and Mellor, P.B. Some strain rate and anisotropy effects in the stretch-forming of steel sheets. Int. J. M. T.D.R. (1965), 1, 37.Google Scholar
  27. 27.
    Vaidyanathan, P.V. PhD thesis, University of Leeds (1972).Google Scholar
  28. 28.
    Shabaik, A., Lee, C.H., and Kobayashi, S. Application of the visioplasticity method to extrusion through a conical die. Proc. 7th Int. M.T.D.R. Conf, Pergamon Press, Oxford (1966), 633.Google Scholar
  29. 29.
    Shabaik, A., and Kobayashi, S. Computer applications to visioplasticity method. Trans. A.S.M.E., J. Eng. Ind. B (1967), 89, 339.CrossRefGoogle Scholar
  30. 30.
    Shabaik, A., and Thompsen, E.G. A theoretical method for the analysis of metalworking problems. Trans. A.S.M.E., J. Eng. Ind. (1968), 90, 343.CrossRefGoogle Scholar
  31. 31.
    Medrano, R.E., and Gillis, P.P. Visioplasticity techniques in axisymmetric extrusion. J. Strain Analysis (1972), 7, 170.CrossRefGoogle Scholar

Copyright information

© T. Z. Blazynski 1976

Authors and Affiliations

  • T. Z. Blazynski
    • 1
  1. 1.Dept. of Mechanical EngineeringUniversity of LeedsUK

Personalised recommendations