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TECHNICAL PAPERS

Experimental and Numerical Investigation on the Influence of Process Speed on the Blanking Process

[+] Author and Article Information
A. M. Goijaerts, L. E. Govaert, F. P. T. Baaijens

Materials Technology, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

J. Manuf. Sci. Eng 124(2), 416-419 (Apr 29, 2002) (4 pages) doi:10.1115/1.1445152 History: Received March 01, 2000; Revised May 01, 2001; Online April 29, 2002
Copyright © 2002 by ASME
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References

Goijaerts,  A. M., Govaert,  L. E., and Baaijens,  F. P. T., 2000, “Prediction of Ductile Fracture in Metal Blanking,” ASME J. Manuf. Sci. Eng., 122, pp. 476–483.
Tilsley,  R., and Howard,  F., 1958, “Recent Investigations into the Blanking and Piercing of Sheet Materials,” Machinery, 93, pp. 151–158.
Johnson, W., and Slater, R. A. C., 1967, “A Survey of the Slow and Fast Blanking of Metals at Ambient and High Temperatures,” Proceedings of the International Conference of Manufacturing Technology pp. 773–851, Michigan.
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Goijaerts, A. M., 1999, “Prediction of Ductile Fracture in Metal Blanking,” Ph.D. thesis, Eindhoven University of Technology, The Netherlands. http://wfwweb.wfw.wtb.tue.nl/mate/pdfs/54.pdf
Brokken,  D., Brekelmans,  W. A. M., and Baaijens,  F. P. T., 1998, “Numerical Modelling of the Metal Blanking Process,” J. Mater. Process. Technol. 83, pp. 192–199.
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Goijaerts,  A. M., Stegeman,  Y. W., Govaert,  L. E., Brokken,  D., Brekelmans,  W. A. M., and Baaijens,  F. P. T., 2000, “Can a New and Experimental and Numerical Study Improve Metal Blanking?” J. Mater. Process. Technol., 103, pp. 44–50.
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Figures

Grahic Jump Location
Performance of constitutive model with the Bodner-Partom viscosity function using Z(ε̄p) according to Eq. (7). The markers represent the experimentally found stress-strain relations out of the tensile tests for different strain rates. The bold solid line represents the stress-strain relation of Eq. (6).
Grahic Jump Location
A typical mesh produced by the adaptive automatic remeshing algorithm
Grahic Jump Location
Comparison of experimental maximum blanking forces with numerical predictions using the compressible Leonov model with Bodner-Partom viscosity over a large range of punching velocities.
Grahic Jump Location
Comparison for experimental punch displacements at fracture and numerical predictions using the criteria of Table 2 as a function of blanking velocities. The error bars represent twice the standard-deviations for the experiments (95 percent interval).

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