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TECHNICAL PAPERS

Plastic Deformation of a Perforated Sheet With Non-Uniform Circular Holes Along the Thickness Direction

[+] Author and Article Information
Fuh-Kuo Chen, Yi-Che Lee

Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROC

J. Eng. Mater. Technol 125(1), 75-80 (Dec 31, 2002) (6 pages) doi:10.1115/1.1526127 History: Received June 09, 2001; Revised February 03, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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References

Figures

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Geometry of the non-uniform circular hole
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Triangular pattern of circular holes showing yielding along the minimum ligament width
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Non-uniform circular hole and the equivalent uniform circular hole: (a) non-uniform circular hole; and (b) equivalent uniform circular hole
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Circular holes arranged in a triangular pattern
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Values of k for various ligament ratios
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Finite element models for a unit cell: (a) two-dimensional; and (b) three-dimensional
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Apparent stress and strain relation obtained from FEM for uniaxial tension in the y direction
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Apparent stress and strain relation obtained from experiments for uniaxial tension in the y direction
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Comparison of apparent yield stress ratios (Yx/Yy)
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Comparison of apparent yield stress ratios (Y45/Yb)
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Comparison of the apparent strain ratios Rx
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Comparison of the apparent strain ratios Ry

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