✦ LIBER ✦

A New Approach to Predicting Forming Limits of Steel Sheet

✍ Scribed by S.G. Xu; K.J. Weinmann

Publisher: Society of Manufacturing Engineers
Year: 2000
Tongue: English
Weight: 992 KB
Volume: 2
Category: Article
ISSN: 1526-6125
DOI: 10.1016/s1526-6125(00)70117-4

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✦ Synopsis

A yield criterion utilizing five independent material parameters for representing the yield locus was proposed by Hill in 1993. This paper describes an attempt to analyze forming limits of aluminum-killed (AK) steel sheet metal based on this criterion in conjunction with the M-K approach. Comparison of the predicted results with experimental data indicates that localized necking can be characterized only to a limited extent. However, material properties do not remain constant, but are deformation history dependent. Inclusion of deformation-dependent parameters in the analysis demonstrates a significant positive influence on forming limits. Comparison of predicted results with the experimental data underscores that the consideration of history-dependent material properties can improve forming limit predictions considerably.

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