An Analytical Model for Tailor Welded Blank Forming

[+] Author and Article Information
Brad L. Kinsey

Department of Mechanical Engineering, University of New Hampshire, Durham, NH 03824-3591

Jian Cao

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208e-mail: jcao@northwestern.edu

J. Manuf. Sci. Eng 125(2), 344-351 (Apr 15, 2003) (8 pages) doi:10.1115/1.1537261 History: Received July 01, 2001; Revised March 01, 2002; Online April 15, 2003
Copyright © 2003 by ASME
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Exploded view of current and/or potential automotive TWB applications 1
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Schematic of (a) an unconstrained material condition causing wrinkling failure and (b) an over-constrained material condition causing tearing failure in a TWB application
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2D cross-sectional view of (a) TWB and tooling and (b) TWB and key locations identified
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Flowchart of analytical model methodology
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Schematic of right side of 2D cross-section showing variables used in material draw-in calculations
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Example relationship between material draw-in ratio and forming height
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Dependency of the calculated forming height, xFH, on the xb value
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2D cross-sectional geometry for (a) Geometry I and (b) Geometry II, which also indicates initial weld line positions
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Comparison of normalized force in the 1-direction obtained from the analytical model and numerical simulation. Case shown is Geometry I with the initial weld line position in the center.
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Comparison of normalized strain in the 1-direction obtained from the analytical model and numerical simulation. Case shown is Geometry I with the initial weld line position in the center.
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Location of 2D cross-section on test panel geometry
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2D cross-sectional geometry for test panel geometry, which also indicates initial weld line position




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