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Experimental Studies of Material Behavior as Related to Sheet Metal Forming

  • K. Yoshida
  • K. Miyauchi
Chapter

Abstract

The material behavior in sheet metal forming has been investigated widely in the past several years in order to better assess press performance. This has resulted in a rapidly changing concept of press formability.

In addition to the conventional tensile and simulative tests, the stress-strain relation and workhardening behavior for various modes of deformation are analytically examined. New tests, such as the X value (ratio of deformation resistance under uniaxial and biaxial loading) are proposed. Strain analyses, including the forming limit analysis, have also been employed, using the scribed circle test, for more accurate understanding of complex shape forming in the press shops. Further, the deformation path is now known to strongly govern the forming limit curve.

The metal flow analysis is also attracting great attention as a possible means of extending the strain analysis. Formability is growing into a wider concept depending on such multi-factors as fracture, wrinkling, surface roughening, galling and geometrical accuracy.

In the near future, it will probably be necessary to establish a total assessment system which takes into account forming defects, material properties and chemical composition.

Keywords

Sheet Metal Deep Drawability Form Limit Curve Deformation Path Sheet Metal Form 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • K. Yoshida
    • 1
  • K. Miyauchi
    • 1
  1. 1.The Institute of Physical and Chemical ResearchJapan

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