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Experimental Mechanics

, Volume 14, Issue 3, pp 104–110 | Cite as

Test for sheet-metal formability with coupon and circular specimens

The locus of the limiting strain is used as the criterion for formability in sheet metal
  • H. M. Shang
  • T. C. Hsü
Article

Abstract

Formability in sheet metal is defined as the locus of the limiting strain. The initiation of localized thinning, which manifests itself as a groove, is taken as the criterion of failure. The deformation of circular and coupon specimens is discussed with particular reference to the effect of the process parameters on the strain ratios at the critical section. Curves are presented for the formability of aluminum sheets with failure in both the direction of rolling and that perpendicular to it.

Keywords

Aluminum Mechanical Engineer Fluid Dynamics Sheet Metal Aluminum Sheet 
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References

  1. 1.
    Hsü, T. C., “The Kinematics of Axisymmetrical Sheet Metal Forming Processes and the Definition of Drawability,” Proc. Intl. Conf. on the Sci. and Tech. of Iron and Steel, Tokyo, Part II, 903–907 (Sept. 1970).Google Scholar
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    Hsü, T. C., “Some Remarks on Sheet Metal Formability and Its Measurement,”Proc. Intl. Conf. on Mech. Beh. of Matl., Kyoto (Aug. 1971).Vol. I, 206–217.Google Scholar
  3. 3.
    Lee, P. K., Choi, C. Y. and Hsü, T. C., “Effect of Draw-in on Formability in Axisymmetrical Sheet Metal Forming,” ASME Winter Annual Meeting, Paper No. 72-WA/Prod-1 (1972).Google Scholar
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    Hsü, T. C., Dowle, W. R., Choi, C. Y. and Lee, P. K., “Strain Histories and Strain Distributions in a Cup Drawing Operation,” Trans. ASME,93B (2), 461–466.Google Scholar
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    Hsü, T. C. andWilliamson, A. S., “A Study of the Plastic Deformation of an Aluminium Alloy in the Tension Test,”Proc. ASTM,65,575–596 (1965).Google Scholar
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    Yoshida, K., “Ultimate Ductility of Sheet Metal in Various Deformation Modes,”Rept. of Inst. of Phys. and Chem. Res.,45 (4),79–92 (1967),in Japanese.Google Scholar
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    Nakajime, H., “Effect of Strain Path on Fracture Strain,” Proc. Conf. on the Tech. of Sheet Steel Forming, 85–97 (1969), in Japanese.Google Scholar

Copyright information

© Society for Experimental Mechanics, Inc. 1974

Authors and Affiliations

  • H. M. Shang
    • 1
  • T. C. Hsü
    • 1
  1. 1.Department of Production EngineeringUniversity of AstonBirmingham 4England

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