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TECHNICAL PAPERS

Finite Element Modeling of Burr Formation Process in Drilling 304 Stainless Steel

[+] Author and Article Information
Y. B. Guo, D. A. Dornfeld

Dept. of Mechanical Engineering, University of California, Berkeley, Berkeley, CA 94720-1740

J. Manuf. Sci. Eng 122(4), 612-619 (Sep 01, 1999) (8 pages) doi:10.1115/1.1285885 History: Received October 01, 1997; Revised September 01, 1999
Copyright © 2000 by ASME
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References

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Figures

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Cross section of the workpiece geometry
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Drill geometry: side view (left), top view (right)
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Effect of radial position along drill lips on the effective rake angle
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Effect of radial position on the effective plastic strain
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Element sets of the FEM model
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Flow chart of drilling burr formation simulation
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Burr initiation from simulation (left) and drilling plasticine (right)
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Von Mises stress contour in burr initiation
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Burr development from simulation (left) and drilling plasticine (right)
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Von Mises stress contour in burr development
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Pivoting point from simulation (left) and drilling plasticine (right)
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Von Mises stress contour at pivoting stage
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Cap formation from simulation (left), drilling plasticine (right top) and 304 SS (right bottom)
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Von Mises stress contour in cap formation
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Final burr geometry from simulation (left), burr of plasticine (right top) and burr of 304 SS (right bottom)
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Residual Von Mises stress contour

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