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Factors Affecting the Formability of Corners in Sheetmetal Parts
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English
Abstract
A study is made of the factors affecting the formability of corners in the stamping of sheetmetal parts. The corners are modeled by toroidal shells. The factors considered are geometry, the toroidal radii A and B, friction factor μ, strain- hardening index n, and anisotropy ratio R. The analysis is based on a new differential equation approach, where formability is associated with singularities in the differential equations. The results presented in graphical form should prove useful for design.
The difference between biaxial and plane strain conditions are made, and comparisons are made with some known experimental results and other theoretical results in the literature.
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Authors
Citation
Gerdeen, J. and Huang, M., "Factors Affecting the Formability of Corners in Sheetmetal Parts," SAE Technical Paper 920637, 1992, https://doi.org/10.4271/920637.Also In
References
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- El-Jaam, Bassam Department of Mechanical Engineering, University of Colorado Denver 1991
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- Johnson, W. Mellor P.B. Plasticity For Mechanical Engineers Van Nostrand Co. 1962 212 213
- Shi, M.F. Gerdeen J.C. “Effect of Strain Gradient and Curvature on Forming Limit Diagrams for Anisotropic Sheets” Jnl. of Materials Shaping Technology 9 4 1991
- Hobbs, R.M. “Prediction and Analysis of Press Performance for Sheet Steels” Source Book on Forming of Steel Sheet ASM 1976 1 13