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Interaction of Part Geometry and Material Properties with Forming Severity and Tooling Design for Box-Shaped Stampings
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English
Abstract
The theme of this work is the interaction of the part geometry, material properties, forming severity and tooling design for box-shaped stampings. It is shown that the forming severity decreases with the increase of material normal anisotropy and corner radius. The lower the material normal anisotropy, the larger are the required tooling clearances and the thickening of the material under the blankholder. Understanding these relationships is of primary importance in applications requiring a major change in material properties, such as cold-rolled to hot-rolled conversion of products, or product shape redesign.
The work also introduces a new type of idealization to metal forming problems. Beside the traditional continuum mechanics axisymmetric and plane strain idealizations, the work introduces the “corner analysis” approximation.
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Citation
Assempoor, A. and Karima, M., "Interaction of Part Geometry and Material Properties with Forming Severity and Tooling Design for Box-Shaped Stampings," SAE Technical Paper 920438, 1992, https://doi.org/10.4271/920438.Also In
References
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- Jimma, T. “Deep Drawing of Convex Polygon-Shell Researches on Deep Drawing of sheet metals by the Slip Line theory,1st Report” Japan Soc. Tech. for Plasticity 11 116 653 670 1970
- Assempoor, A. Karima, M. “Blank Development and Metal Flow Analysis for Multi-Stage Drawing of Box Shaped Stampings” Society of Automotive Engineers Warrendale, PA. paper No. 910516 1991
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- Sowerby, R. Chu, E. Duncan J.L. “The determination of Large Strains in Metal Forming” J. Strain Analysis 17 95 101 1982
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