This paper presents an in-depth experimental and numerical investigation of a split-ring test, which provides a simple yet effective benchmark for correlating forming and springback predictive capabilities with experimental measurements. The experimental procedure consists of deep drawing a circular 6111-T4 aluminum alloy into a cylindrical cup of depth, crosscutting nine rings each of wide from the cup, splitting the rings, and measuring their opening displacement, i.e., the springback amount. Experimental data obtained included punch force trajectories, drawn cup profile, thickness distribution after forming, and the ring openings after splitting. A numerical model is built to analyze the process, and both transversely isotropic and fully orthotropic yield criteria are investigated. Simulation results are validated against experimental data. A detailed numerical analysis is also conducted for stress distributions in each ring after each step and their relationship to the total springback amount. Stress and strain signatures suggested that the test is well suited for validating material models, such as anisotropic yield surface models and hardening models.
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April 2007
Technical Papers
Experimental and Numerical Investigations of a Split-Ring Test for Springback
Z. Cedric Xia,
Z. Cedric Xia
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121
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Craig E. Miller,
Craig E. Miller
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121
Search for other works by this author on:
Feng Ren
Feng Ren
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121
Search for other works by this author on:
Z. Cedric Xia
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121
Craig E. Miller
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121
Feng Ren
Scientific Research Laboratories,
Ford Motor Company
, Dearborn, MI 48121J. Manuf. Sci. Eng. Apr 2007, 129(2): 352-359 (8 pages)
Published Online: August 22, 2006
Article history
Received:
February 24, 2006
Revised:
August 22, 2006
Citation
Xia, Z. C., Miller, C. E., and Ren, F. (August 22, 2006). "Experimental and Numerical Investigations of a Split-Ring Test for Springback." ASME. J. Manuf. Sci. Eng. April 2007; 129(2): 352–359. https://doi.org/10.1115/1.2673341
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